78825447562434 has 16 divisors (see below), whose sum is σ = 157651348955520. Its totient is φ = 26275073549040.

The previous prime is 78825447562363. The next prime is 78825447562453. The reversal of 78825447562434 is 43426574452887.

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, 16630522 + ... + 20838069.

It is an arithmetic number, because the mean of its divisors is an integer number (9853209309720).

Almost surely, 2^{78825447562434} is an apocalyptic number.

78825447562434 is an abundant number, since it is smaller than the sum of its proper divisors (78825901393086).

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

78825447562434 is a wasteful number, since it uses less digits than its factorization.

78825447562434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37819225.

The product of its digits is 1445068800, while the sum is 69.

The spelling of 78825447562434 in words is "seventy-eight trillion, eight hundred twenty-five billion, four hundred forty-seven million, five hundred sixty-two thousand, four hundred thirty-four".