78587645372 has 12 divisors (see below), whose sum is σ = 137740947120. Its totient is φ = 39233089056.

The previous prime is 78587645371. The next prime is 78587645393. The reversal of 78587645372 is 27354678587.

It is a super-3 number, since 3×78587645372³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78587645371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15180497 + ... + 15185672.

It is an arithmetic number, because the mean of its divisors is an integer number (11478412260).

Almost surely, 2^78587645372 is an apocalyptic number.

It is an amenable number.

78587645372 is a deficient number, since it is larger than the sum of its proper divisors (59153301748).

78587645372 is a wasteful number, since it uses less digits than its factorization.

78587645372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30366820 (or 30366818 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 62.

The spelling of 78587645372 in words is "seventy-eight billion, five hundred eighty-seven million, six hundred forty-five thousand, three hundred seventy-two".