155056520136 has 64 divisors (see below), whose sum is σ = 462280320000. Its totient is φ = 42375693888.

The previous prime is 155056520123. The next prime is 155056520147. The reversal of 155056520136 is 631025650551.

It is a junction number, because it is equal to n+sod(n) for n = 155056520094 and 155056520103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20060386 + ... + 20068113.

It is an arithmetic number, because the mean of its divisors is an integer number (7223130000).

Almost surely, 2^155056520136 is an apocalyptic number.

It is an amenable number.

155056520136 is an abundant number, since it is smaller than the sum of its proper divisors (307223799864).

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

155056520136 is a wasteful number, since it uses less digits than its factorization.

155056520136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40128538 (or 40128534 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 155056520136 in words is "one hundred fifty-five billion, fifty-six million, five hundred twenty thousand, one hundred thirty-six".