155530125696 has 128 divisors (see below), whose sum is σ = 452572531200. Its totient is φ = 46932838400.

The previous prime is 155530125679. The next prime is 155530125743. The reversal of 155530125696 is 696521035551.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932506 + ... + 1086566.

It is an arithmetic number, because the mean of its divisors is an integer number (3535722900).

Almost surely, 2^155530125696 is an apocalyptic number.

155530125696 is a gapful number since it is divisible by the number (16) 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 155530125696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226286265600).

155530125696 is an abundant number, since it is smaller than the sum of its proper divisors (297042405504).

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

155530125696 is a wasteful number, since it uses less digits than its factorization.

155530125696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154328 (or 154316 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 48.

The spelling of 155530125696 in words is "one hundred fifty-five billion, five hundred thirty million, one hundred twenty-five thousand, six hundred ninety-six".