15056559081 has 12 divisors (see below), whose sum is σ = 21832990452. Its totient is φ = 9998647296.

The previous prime is 15056559079. The next prime is 15056559083. The reversal of 15056559081 is 18095565051.

15056559081 is a `hidden beast` number, since 1 + 5 + 0 + 56 + 5 + 590 + 8 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (15056559079) and next prime (15056559083).

It can be written as a sum of positive squares in 2 ways, for example, as 14961203856 + 95355225 = 122316^2 + 9765^2 .

It is not a de Polignac number, because 15056559081 - 2¹ = 15056559079 is a prime.

It is a super-2 number, since 2×15056559081² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15056559083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3252456 + ... + 3257081.

It is an arithmetic number, because the mean of its divisors is an integer number (1819415871).

Almost surely, 2^15056559081 is an apocalyptic number.

It is an amenable number.

15056559081 is a deficient number, since it is larger than the sum of its proper divisors (6776431371).

15056559081 is a wasteful number, since it uses less digits than its factorization.

15056559081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6509800 (or 6509797 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 45.

The spelling of 15056559081 in words is "fifteen billion, fifty-six million, five hundred fifty-nine thousand, eighty-one".