153196905978 has 24 divisors (see below), whose sum is σ = 331934023668. Its totient is φ = 51064497792.

The previous prime is 153196905959. The next prime is 153196905991. The reversal of 153196905978 is 879509691351.

153196905978 is a `hidden beast` number, since 1 + 5 + 31 + 9 + 6 + 9 + 0 + 597 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 144204746049 + 8992159929 = 379743^2 + 94827^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1255650 + ... + 1372242.

Almost surely, 2^153196905978 is an apocalyptic number.

153196905978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

153196905978 is an abundant number, since it is smaller than the sum of its proper divisors (178737117690).

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

153196905978 is a wasteful number, since it uses less digits than its factorization.

153196905978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189598 (or 189595 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 63.

The spelling of 153196905978 in words is "one hundred fifty-three billion, one hundred ninety-six million, nine hundred five thousand, nine hundred seventy-eight".