13561292238 has 32 divisors (see below), whose sum is σ = 29250722592. Its totient is φ = 4166736000.

The previous prime is 13561292221. The next prime is 13561292257. The reversal of 13561292238 is 83229216531.

It is a self number, because there is not a number n which added to its sum of digits gives 13561292238.

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, 69333 + ... + 178688.

It is an arithmetic number, because the mean of its divisors is an integer number (914085081).

Almost surely, 2^13561292238 is an apocalyptic number.

13561292238 is an abundant number, since it is smaller than the sum of its proper divisors (15689430354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13561292238 is a wasteful number, since it uses less digits than its factorization.

13561292238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248740.

The product of its digits is 155520, while the sum is 42.

The spelling of 13561292238 in words is "thirteen billion, five hundred sixty-one million, two hundred ninety-two thousand, two hundred thirty-eight".