78275108253580 has 48 divisors (see below), whose sum is σ = 187864574236416. Its totient is φ = 26836563625920.

The previous prime is 78275108253491. The next prime is 78275108253583. The reversal of 78275108253580 is 8535280157287.

It is a happy number.

It is a super-2 number, since 2×78275108253580² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78275108253583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281694 + ... + 12515173.

It is an arithmetic number, because the mean of its divisors is an integer number (3913845296592).

Almost surely, 2^{78275108253580} is an apocalyptic number.

78275108253580 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78275108253580 is an abundant number, since it is smaller than the sum of its proper divisors (109589465982836).

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

78275108253580 is a wasteful number, since it uses less digits than its factorization.

78275108253580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12840574 (or 12840572 counting only the distinct ones).

The product of its (nonzero) digits is 37632000, while the sum is 61.

The spelling of 78275108253580 in words is "seventy-eight trillion, two hundred seventy-five billion, one hundred eight million, two hundred fifty-three thousand, five hundred eighty".