155946346920 has 384 divisors, whose sum is σ = 643911690240. Its totient is φ = 31841372160.

The previous prime is 155946346877. The next prime is 155946347009. The reversal of 155946346920 is 29643649551.

155946346920 is a `hidden beast` number, since 1 + 5 + 59 + 463 + 46 + 92 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 938782 + ... + 1092338.

It is an arithmetic number, because the mean of its divisors is an integer number (1676853360).

Almost surely, 2^155946346920 is an apocalyptic number.

155946346920 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 155946346920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321955845120).

155946346920 is an abundant number, since it is smaller than the sum of its proper divisors (487965343320).

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

155946346920 is a wasteful number, since it uses less digits than its factorization.

155946346920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153625 (or 153618 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 155946346920 in words is "one hundred fifty-five billion, nine hundred forty-six million, three hundred forty-six thousand, nine hundred twenty".