78329540528 has 20 divisors (see below), whose sum is σ = 153236919888. Its totient is φ = 38784528960.

The previous prime is 78329540519. The next prime is 78329540539. The reversal of 78329540528 is 82504592387.

It is a super-2 number, since 2×78329540528² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78329540528.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23763383 + ... + 23766678.

Almost surely, 2^78329540528 is an apocalyptic number.

It is an amenable number.

78329540528 is a deficient number, since it is larger than the sum of its proper divisors (74907379360).

78329540528 is a wasteful number, since it uses less digits than its factorization.

78329540528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47530172 (or 47530166 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 78329540528 in words is "seventy-eight billion, three hundred twenty-nine million, five hundred forty thousand, five hundred twenty-eight".