155851440250 has 32 divisors (see below), whose sum is σ = 318276983232. Its totient is φ = 56673250000.

The previous prime is 155851440211. The next prime is 155851440253. The reversal of 155851440250 is 52044158551.

It is not an unprimeable number, because it can be changed into a prime (155851440253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28333876 + ... + 28339375.

It is an arithmetic number, because the mean of its divisors is an integer number (9946155726).

Almost surely, 2^155851440250 is an apocalyptic number.

155851440250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155851440250 is an abundant number, since it is smaller than the sum of its proper divisors (162425542982).

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

155851440250 is a wasteful number, since it uses less digits than its factorization.

155851440250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56673279 (or 56673269 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 155851440250 in words is "one hundred fifty-five billion, eight hundred fifty-one million, four hundred forty thousand, two hundred fifty".