78369455580 has 192 divisors, whose sum is σ = 244844328960. Its totient is φ = 18596680704.

The previous prime is 78369455573. The next prime is 78369455627. The reversal of 78369455580 is 8555496387.

It is a super-3 number, since 3×78369455580³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16804329 + ... + 16808991.

It is an arithmetic number, because the mean of its divisors is an integer number (1275230880).

Almost surely, 2^78369455580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78369455580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122422164480).

78369455580 is an abundant number, since it is smaller than the sum of its proper divisors (166474873380).

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

78369455580 is a wasteful number, since it uses less digits than its factorization.

78369455580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 78369455580 in words is "seventy-eight billion, three hundred sixty-nine million, four hundred fifty-five thousand, five hundred eighty".