78328678504 has 16 divisors (see below), whose sum is σ = 148934812320. Its totient is φ = 38612728560.

The previous prime is 78328678487. The next prime is 78328678567. The reversal of 78328678504 is 40587682387.

It is a super-2 number, since 2×78328678504² (a number of 23 digits) contains 22 as substring.

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, 68950734 + ... + 68951869.

It is an arithmetic number, because the mean of its divisors is an integer number (9308425770).

Almost surely, 2^78328678504 is an apocalyptic number.

It is an amenable number.

78328678504 is a deficient number, since it is larger than the sum of its proper divisors (70606133816).

78328678504 is a wasteful number, since it uses less digits than its factorization.

78328678504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137902680 (or 137902676 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 78328678504 in words is "seventy-eight billion, three hundred twenty-eight million, six hundred seventy-eight thousand, five hundred four".