78804128258 has 32 divisors (see below), whose sum is σ = 124505050752. Its totient is φ = 37335020800.

The previous prime is 78804128251. The next prime is 78804128267. The reversal of 78804128258 is 85282140887.

It is a super-2 number, since 2×78804128258² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78804128251) 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, 14244953 + ... + 14250483.

It is an arithmetic number, because the mean of its divisors is an integer number (3890782836).

Almost surely, 2^78804128258 is an apocalyptic number.

78804128258 is a deficient number, since it is larger than the sum of its proper divisors (45700922494).

78804128258 is a wasteful number, since it uses less digits than its factorization.

78804128258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410.

The product of its (nonzero) digits is 2293760, while the sum is 53.

The spelling of 78804128258 in words is "seventy-eight billion, eight hundred four million, one hundred twenty-eight thousand, two hundred fifty-eight".