78650786536 has 32 divisors (see below), whose sum is σ = 169653559680. Its totient is φ = 33484248000.

The previous prime is 78650786491. The next prime is 78650786587. The reversal of 78650786536 is 63568705687.

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, 4642135 + ... + 4659046.

It is an arithmetic number, because the mean of its divisors is an integer number (5301673740).

Almost surely, 2^78650786536 is an apocalyptic number.

It is an amenable number.

78650786536 is an abundant number, since it is smaller than the sum of its proper divisors (91002773144).

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

78650786536 is a wasteful number, since it uses less digits than its factorization.

78650786536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301345 (or 9301341 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 61.

The spelling of 78650786536 in words is "seventy-eight billion, six hundred fifty million, seven hundred eighty-six thousand, five hundred thirty-six".