1561072412922 has 32 divisors (see below), whose sum is σ = 3414066439104. Its totient is φ = 471928598400.

The previous prime is 1561072412827. The next prime is 1561072413077. The reversal of 1561072412922 is 2292142701651.

It is a happy number.

It is a super-2 number, since 2×1561072412922² (a number of 25 digits) contains 22 as substring.

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, 28063203 + ... + 28118774.

It is an arithmetic number, because the mean of its divisors is an integer number (106689576222).

Almost surely, 2^{1561072412922} is an apocalyptic number.

1561072412922 is an abundant number, since it is smaller than the sum of its proper divisors (1852994026182).

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

1561072412922 is a wasteful number, since it uses less digits than its factorization.

1561072412922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56182414.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 1561072412922 in words is "one trillion, five hundred sixty-one billion, seventy-two million, four hundred twelve thousand, nine hundred twenty-two".