78558458572 has 24 divisors (see below), whose sum is σ = 151873666560. Its totient is φ = 35256383760.

The previous prime is 78558458567. The next prime is 78558458597. The reversal of 78558458572 is 27585485587.

It is a super-3 number, since 3×78558458572³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11296648 + ... + 11303599.

It is an arithmetic number, because the mean of its divisors is an integer number (6328069440).

Almost surely, 2^78558458572 is an apocalyptic number.

It is an amenable number.

78558458572 is a deficient number, since it is larger than the sum of its proper divisors (73315207988).

78558458572 is a wasteful number, since it uses less digits than its factorization.

78558458572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22600341 (or 22600339 counting only the distinct ones).

The product of its digits is 125440000, while the sum is 64.

The spelling of 78558458572 in words is "seventy-eight billion, five hundred fifty-eight million, four hundred fifty-eight thousand, five hundred seventy-two".