155806545600 has 882 divisors, whose sum is σ = 598222661820. Its totient is φ = 39918873600.

The previous prime is 155806545599. The next prime is 155806545613. The reversal of 155806545600 is 6545608551.

155806545600 is a `hidden beast` number, since 1 + 5 + 5 + 80 + 6 + 5 + 4 + 560 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 125 ways as a sum of consecutive naturals, for example, 1120910331 + ... + 1120910469.

Almost surely, 2^155806545600 is an apocalyptic number.

155806545600 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 155806545600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299111330910).

155806545600 is an abundant number, since it is smaller than the sum of its proper divisors (442416116220).

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

155806545600 is an equidigital number, since it uses as much as digits as its factorization.

155806545600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 155806545600 in words is "one hundred fifty-five billion, eight hundred six million, five hundred forty-five thousand, six hundred".