78289122953592 has 192 divisors, whose sum is σ = 216265110516000. Its totient is φ = 25580613906432.

The previous prime is 78289122953551. The next prime is 78289122953597. The reversal of 78289122953592 is 29535922198287.

It is a happy number.

78289122953592 is a `hidden beast` number, since 7 + 8 + 2 + 8 + 9 + 1 + 2 + 29 + 5 + 3 + 592 = 666.

78289122953592 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78289122953592² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 78289122953592.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78289122953597) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1661143084 + ... + 1661190212.

Almost surely, 2^{78289122953592} is an apocalyptic number.

78289122953592 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78289122953592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108132555258000).

78289122953592 is an abundant number, since it is smaller than the sum of its proper divisors (137975987562408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78289122953592 is a wasteful number, since it uses less digits than its factorization.

78289122953592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49390 (or 49383 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 72.

The spelling of 78289122953592 in words is "seventy-eight trillion, two hundred eighty-nine billion, one hundred twenty-two million, nine hundred fifty-three thousand, five hundred ninety-two".