13260015555 has 16 divisors (see below), whose sum is σ = 22464026784. Its totient is φ = 6656007680.

The previous prime is 13260015551. The next prime is 13260015611. The reversal of 13260015555 is 55551006231.

It is not a de Polignac number, because 13260015555 - 2² = 13260015551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13260015551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25999776 + ... + 26000285.

It is an arithmetic number, because the mean of its divisors is an integer number (1404001674).

Almost surely, 2^13260015555 is an apocalyptic number.

13260015555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13260015555 is a deficient number, since it is larger than the sum of its proper divisors (9204011229).

13260015555 is a wasteful number, since it uses less digits than its factorization.

13260015555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52000086.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 13260015555 in words is "thirteen billion, two hundred sixty million, fifteen thousand, five hundred fifty-five".