156378864520 has 16 divisors (see below), whose sum is σ = 351852445260. Its totient is φ = 62551545792.

The previous prime is 156378864457. The next prime is 156378864581. The reversal of 156378864520 is 25468873651.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 144295139044 + 12083725476 = 379862^2 + 109926^2 .

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, 1954735767 + ... + 1954735846.

Almost surely, 2^156378864520 is an apocalyptic number.

156378864520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156378864520 is an abundant number, since it is smaller than the sum of its proper divisors (195473580740).

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

156378864520 is a wasteful number, since it uses less digits than its factorization.

156378864520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909471624 (or 3909471620 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 156378864520 in words is "one hundred fifty-six billion, three hundred seventy-eight million, eight hundred sixty-four thousand, five hundred twenty".