15400939922 has 8 divisors (see below), whose sum is σ = 23243136816. Its totient is φ = 7653227652.

The previous prime is 15400939913. The next prime is 15400939993. The reversal of 15400939922 is 22993900451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23620748 + ... + 23621399.

It is an arithmetic number, because the mean of its divisors is an integer number (2905392102).

Almost surely, 2^15400939922 is an apocalyptic number.

15400939922 is a deficient number, since it is larger than the sum of its proper divisors (7842196894).

15400939922 is a wasteful number, since it uses less digits than its factorization.

15400939922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47242312.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 15400939922 in words is "fifteen billion, four hundred million, nine hundred thirty-nine thousand, nine hundred twenty-two".