155870023680 has 1040 divisors, whose sum is σ = 660698379264. Its totient is φ = 34398535680.

The previous prime is 155870023643. The next prime is 155870023693. The reversal of 155870023680 is 86320078551.

155870023680 is a `hidden beast` number, since 1 + 5 + 587 + 0 + 0 + 2 + 3 + 68 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 359976744 + ... + 359977176.

Almost surely, 2^155870023680 is an apocalyptic number.

155870023680 is a gapful number since it is divisible by the number (10) 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 155870023680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330349189632).

155870023680 is an abundant number, since it is smaller than the sum of its proper divisors (504828355584).

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

155870023680 is an equidigital number, since it uses as much as digits as its factorization.

155870023680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 155870023680 in words is "one hundred fifty-five billion, eight hundred seventy million, twenty-three thousand, six hundred eighty".