155249032650 has 24 divisors (see below), whose sum is σ = 385017601344. Its totient is φ = 41399742000.

The previous prime is 155249032619. The next prime is 155249032657. The reversal of 155249032650 is 56230942551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155249032657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517496626 + ... + 517496925.

It is an arithmetic number, because the mean of its divisors is an integer number (16042400056).

Almost surely, 2^155249032650 is an apocalyptic number.

155249032650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155249032650 is an abundant number, since it is smaller than the sum of its proper divisors (229768568694).

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

155249032650 is a wasteful number, since it uses less digits than its factorization.

155249032650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034993566 (or 1034993561 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 155249032650 in words is "one hundred fifty-five billion, two hundred forty-nine million, thirty-two thousand, six hundred fifty".