15422745378 has 32 divisors (see below), whose sum is σ = 31178714112. Its totient is φ = 5085676800.

The previous prime is 15422745353. The next prime is 15422745383. The reversal of 15422745378 is 87354722451.

It is a happy number.

It is a super-2 number, since 2×15422745378² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 170250 + ... + 244602.

It is an arithmetic number, because the mean of its divisors is an integer number (974334816).

Almost surely, 2^15422745378 is an apocalyptic number.

15422745378 is an abundant number, since it is smaller than the sum of its proper divisors (15755968734).

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

15422745378 is a wasteful number, since it uses less digits than its factorization.

15422745378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74730.

The product of its digits is 1881600, while the sum is 48.

The spelling of 15422745378 in words is "fifteen billion, four hundred twenty-two million, seven hundred forty-five thousand, three hundred seventy-eight".