15208115055 has 48 divisors (see below), whose sum is σ = 28352292480. Its totient is φ = 6940842048.

The previous prime is 15208115053. The next prime is 15208115059. The reversal of 15208115055 is 55051180251.

It is not a de Polignac number, because 15208115055 - 2¹ = 15208115053 is a prime.

It is a super-2 number, since 2×15208115055² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15208115053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 438252 + ... + 471678.

It is an arithmetic number, because the mean of its divisors is an integer number (590672760).

Almost surely, 2^15208115055 is an apocalyptic number.

15208115055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15208115055 is a deficient number, since it is larger than the sum of its proper divisors (13144177425).

15208115055 is a wasteful number, since it uses less digits than its factorization.

15208115055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34068 (or 34061 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 33.

The spelling of 15208115055 in words is "fifteen billion, two hundred eight million, one hundred fifteen thousand, fifty-five".