13045531555 has 16 divisors (see below), whose sum is σ = 18019733760. Its totient is φ = 8881147872.

The previous prime is 13045531549. The next prime is 13045531561. The reversal of 13045531555 is 55513554031.

It is an interprime number because it is at equal distance from previous prime (13045531549) and next prime (13045531561).

It is a cyclic number.

It is not a de Polignac number, because 13045531555 - 2⁷ = 13045531427 is a prime.

It is a super-3 number, since 3×13045531555³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335889 + ... + 1345618.

It is an arithmetic number, because the mean of its divisors is an integer number (1126233360).

Almost surely, 2^13045531555 is an apocalyptic number.

13045531555 is a deficient number, since it is larger than the sum of its proper divisors (4974202205).

13045531555 is a wasteful number, since it uses less digits than its factorization.

13045531555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681658.

The product of its (nonzero) digits is 112500, while the sum is 37.

The spelling of 13045531555 in words is "thirteen billion, forty-five million, five hundred thirty-one thousand, five hundred fifty-five".