13572622978 has 16 divisors (see below), whose sum is σ = 21458348280. Its totient is φ = 6428670976.

The previous prime is 13572622937. The next prime is 13572623023. The reversal of 13572622978 is 87922627531.

It is a happy number.

13572622978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12440502369 + 1132120609 = 111537^2 + 33647^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2204575 + ... + 2210722.

Almost surely, 2^13572622978 is an apocalyptic number.

13572622978 is a deficient number, since it is larger than the sum of its proper divisors (7885725302).

13572622978 is a wasteful number, since it uses less digits than its factorization.

13572622978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415381.

The product of its digits is 2540160, while the sum is 52.

The spelling of 13572622978 in words is "thirteen billion, five hundred seventy-two million, six hundred twenty-two thousand, nine hundred seventy-eight".