78238908604 has 12 divisors (see below), whose sum is σ = 136921447264. Its totient is φ = 39118495104.

The previous prime is 78238908593. The next prime is 78238908611. The reversal of 78238908604 is 40680983287.

It is a super-2 number, since 2×78238908604² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37269 + ... + 397324.

Almost surely, 2^78238908604 is an apocalyptic number.

It is an amenable number.

78238908604 is a deficient number, since it is larger than the sum of its proper divisors (58682538660).

78238908604 is a wasteful number, since it uses less digits than its factorization.

78238908604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479604 (or 479602 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 78238908604 in words is "seventy-eight billion, two hundred thirty-eight million, nine hundred eight thousand, six hundred four".