78625639602 has 128 divisors (see below), whose sum is σ = 187743744000. Its totient is φ = 24314696640.

The previous prime is 78625639559. The next prime is 78625639639. The reversal of 78625639602 is 20693652687.

78625639602 is a `hidden beast` number, since 7 + 8 + 6 + 25 + 6 + 3 + 9 + 602 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39096777 + ... + 39098787.

It is an arithmetic number, because the mean of its divisors is an integer number (1466748000).

Almost surely, 2^78625639602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78625639602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93871872000).

78625639602 is an abundant number, since it is smaller than the sum of its proper divisors (109118104398).

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

78625639602 is a wasteful number, since it uses less digits than its factorization.

78625639602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 78625639602 in words is "seventy-eight billion, six hundred twenty-five million, six hundred thirty-nine thousand, six hundred two".