12619521055 has 16 divisors (see below), whose sum is σ = 15273235584. Its totient is φ = 10009359360.

The previous prime is 12619521049. The next prime is 12619521097. The reversal of 12619521055 is 55012591621.

It is a happy number.

It is not a de Polignac number, because 12619521055 - 2¹¹ = 12619519007 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 346095 + ... + 380815.

It is an arithmetic number, because the mean of its divisors is an integer number (954577224).

Almost surely, 2^12619521055 is an apocalyptic number.

12619521055 is a deficient number, since it is larger than the sum of its proper divisors (2653714529).

12619521055 is a wasteful number, since it uses less digits than its factorization.

12619521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35346.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 12619521055 in words is "twelve billion, six hundred nineteen million, five hundred twenty-one thousand, fifty-five".