155150015505 has 32 divisors (see below), whose sum is σ = 250550786304. Its totient is φ = 81978832896.

The previous prime is 155150015437. The next prime is 155150015507. The reversal of 155150015505 is 505510051551.

It is not a de Polignac number, because 155150015505 - 2⁸ = 155150015249 is a prime.

It is a super-2 number, since 2×155150015505² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155150015507) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 958617 + ... + 1108713.

It is an arithmetic number, because the mean of its divisors is an integer number (7829712072).

Almost surely, 2^155150015505 is an apocalyptic number.

155150015505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155150015505 is a deficient number, since it is larger than the sum of its proper divisors (95400770799).

155150015505 is a wasteful number, since it uses less digits than its factorization.

155150015505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150745.

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 155150015505 in words is "one hundred fifty-five billion, one hundred fifty million, fifteen thousand, five hundred five".