155155151550501 has 16 divisors (see below), whose sum is σ = 229859933371200. Its totient is φ = 103436565383664.

The previous prime is 155155151550493. The next prime is 155155151550559. The reversal of 155155151550501 is 105055151551551.

155155151550501 is a `hidden beast` number, since 15 + 5 + 15 + 515 + 15 + 50 + 50 + 1 = 666.

It is not a de Polignac number, because 155155151550501 - 2³ = 155155151550493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155155151450501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9145090 + ... + 19847996.

It is an arithmetic number, because the mean of its divisors is an integer number (14366245835700).

Almost surely, 2^{155155151550501} is an apocalyptic number.

It is an amenable number.

155155151550501 is a deficient number, since it is larger than the sum of its proper divisors (74704781820699).

155155151550501 is a wasteful number, since it uses less digits than its factorization.

155155151550501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11239825 (or 11239819 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 45.

The spelling of 155155151550501 in words is "one hundred fifty-five trillion, one hundred fifty-five billion, one hundred fifty-one million, five hundred fifty thousand, five hundred one".