15565151055 has 8 divisors (see below), whose sum is σ = 24904241712. Its totient is φ = 8301413888.

The previous prime is 15565151047. The next prime is 15565151093. The reversal of 15565151055 is 55015156551.

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 15565151055 - 2³ = 15565151047 is a prime.

It is a super-2 number, since 2×15565151055² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518838354 + ... + 518838383.

It is an arithmetic number, because the mean of its divisors is an integer number (3113030214).

Almost surely, 2^15565151055 is an apocalyptic number.

15565151055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15565151055 is a deficient number, since it is larger than the sum of its proper divisors (9339090657).

15565151055 is a wasteful number, since it uses less digits than its factorization.

15565151055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037676745.

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 15565151055 in words is "fifteen billion, five hundred sixty-five million, one hundred fifty-one thousand, fifty-five".