155549133628 has 96 divisors (see below), whose sum is σ = 333604970496. Its totient is φ = 62052480000.

The previous prime is 155549133613. The next prime is 155549133661. The reversal of 155549133628 is 826331945551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2495968 + ... + 2557528.

It is an arithmetic number, because the mean of its divisors is an integer number (3475051776).

Almost surely, 2^155549133628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155549133628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166802485248).

155549133628 is an abundant number, since it is smaller than the sum of its proper divisors (178055836868).

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

155549133628 is a wasteful number, since it uses less digits than its factorization.

155549133628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61715 (or 61713 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 52.

The spelling of 155549133628 in words is "one hundred fifty-five billion, five hundred forty-nine million, one hundred thirty-three thousand, six hundred twenty-eight".