155501107215 has 32 divisors (see below), whose sum is σ = 264517747200. Its totient is φ = 77831335296.

The previous prime is 155501107129. The next prime is 155501107231. The reversal of 155501107215 is 512701105551.

It is not a de Polignac number, because 155501107215 - 2⁹ = 155501106703 is a prime.

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, 4233865 + ... + 4270434.

It is an arithmetic number, because the mean of its divisors is an integer number (8266179600).

Almost surely, 2^155501107215 is an apocalyptic number.

155501107215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155501107215 is a deficient number, since it is larger than the sum of its proper divisors (109016639985).

155501107215 is a wasteful number, since it uses less digits than its factorization.

155501107215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8504383.

The product of its (nonzero) digits is 8750, while the sum is 33.

The spelling of 155501107215 in words is "one hundred fifty-five billion, five hundred one million, one hundred seven thousand, two hundred fifteen".