78153445236 has 24 divisors (see below), whose sum is σ = 182369948320. Its totient is φ = 26049447072.

The previous prime is 78153445229. The next prime is 78153445261. The reversal of 78153445236 is 63254435187.

It is a super-2 number, since 2×78153445236² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 13831 + ... + 395598.

Almost surely, 2^78153445236 is an apocalyptic number.

It is an amenable number.

78153445236 is an abundant number, since it is smaller than the sum of its proper divisors (104216503084).

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

78153445236 is a wasteful number, since it uses less digits than its factorization.

78153445236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425343 (or 425341 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 48.

The spelling of 78153445236 in words is "seventy-eight billion, one hundred fifty-three million, four hundred forty-five thousand, two hundred thirty-six".