155415501055 has 8 divisors (see below), whose sum is σ = 186500930400. Its totient is φ = 124330848096.

The previous prime is 155415501041. The next prime is 155415501067. The reversal of 155415501055 is 550105514551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155415501055 - 2⁵ = 155415501023 is a prime.

It is a super-2 number, since 2×155415501055² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426961 + ... + 702229.

It is an arithmetic number, because the mean of its divisors is an integer number (23312616300).

Almost surely, 2^155415501055 is an apocalyptic number.

155415501055 is a deficient number, since it is larger than the sum of its proper divisors (31085429345).

155415501055 is a wasteful number, since it uses less digits than its factorization.

155415501055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388193.

The product of its (nonzero) digits is 62500, while the sum is 37.

The spelling of 155415501055 in words is "one hundred fifty-five billion, four hundred fifteen million, five hundred one thousand, fifty-five".