155100615505 has 32 divisors (see below), whose sum is σ = 205640830080. Its totient is φ = 111359930880.

The previous prime is 155100615457. The next prime is 155100615511. The reversal of 155100615505 is 505516001551.

It is not a de Polignac number, because 155100615505 - 2⁹ = 155100614993 is a prime.

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, 3172174 + ... + 3220696.

It is an arithmetic number, because the mean of its divisors is an integer number (6426275940).

Almost surely, 2^155100615505 is an apocalyptic number.

It is an amenable number.

155100615505 is a deficient number, since it is larger than the sum of its proper divisors (50540214575).

155100615505 is a wasteful number, since it uses less digits than its factorization.

155100615505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49281.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 155100615505 in words is "one hundred fifty-five billion, one hundred million, six hundred fifteen thousand, five hundred five".