78685256058 has 24 divisors (see below), whose sum is σ = 167172139392. Its totient is φ = 24685569984.

The previous prime is 78685256057. The next prime is 78685256071. The reversal of 78685256058 is 85065258687.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78685255992 and 78685256010.

It is not an unprimeable number, because it can be changed into a prime (78685256057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22687210 + ... + 22690677.

It is an arithmetic number, because the mean of its divisors is an integer number (6965505808).

Almost surely, 2^78685256058 is an apocalyptic number.

78685256058 is an abundant number, since it is smaller than the sum of its proper divisors (88486883334).

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

78685256058 is a wasteful number, since it uses less digits than its factorization.

78685256058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45377926 (or 45377909 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 60.

The spelling of 78685256058 in words is "seventy-eight billion, six hundred eighty-five million, two hundred fifty-six thousand, fifty-eight".