78825445734556 has 36 divisors (see below), whose sum is σ = 140272710831288. Its totient is φ = 38758327590048.

The previous prime is 78825445734551. The next prime is 78825445734611. The reversal of 78825445734556 is 65543754452887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78825445734551) 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, 6800886 + ... + 14279458.

It is an arithmetic number, because the mean of its divisors is an integer number (3896464189758).

Almost surely, 2^{78825445734556} is an apocalyptic number.

It is an amenable number.

78825445734556 is a deficient number, since it is larger than the sum of its proper divisors (61447265096732).

78825445734556 is a wasteful number, since it uses less digits than its factorization.

78825445734556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7479298 (or 7479229 counting only the distinct ones).

The product of its digits is 4515840000, while the sum is 73.

The spelling of 78825445734556 in words is "seventy-eight trillion, eight hundred twenty-five billion, four hundred forty-five million, seven hundred thirty-four thousand, five hundred fifty-six".