180507861997056 has 480 divisors, whose sum is σ = 594566241325056. Its totient is φ = 52229763072000.

The previous prime is 180507861997037. The next prime is 180507861997079. The reversal of 180507861997056 is 650799168705081.

180507861997056 is a `hidden beast` number, since 1 + 8 + 0 + 507 + 8 + 61 + 9 + 9 + 7 + 0 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96751761 + ... + 98599791.

Almost surely, 2^{180507861997056} is an apocalyptic number.

180507861997056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180507861997056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297283120662528).

180507861997056 is an abundant number, since it is smaller than the sum of its proper divisors (414058379328000).

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

180507861997056 is a wasteful number, since it uses less digits than its factorization.

180507861997056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848154 (or 1848135 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 72.

The spelling of 180507861997056 in words is "one hundred eighty trillion, five hundred seven billion, eight hundred sixty-one million, nine hundred ninety-seven thousand, fifty-six".