22961816402 has 18 divisors (see below), whose sum is σ = 40068644247. Its totient is φ = 9840135564.

The previous prime is 22961816399. The next prime is 22961816413. The reversal of 22961816402 is 20461816922.

It can be written as a sum of positive squares in only one way, i.e., 11480908201 + 11480908201 = 107149^2 + 107149^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=107149.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22961816402.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1492433 + ... + 1507739.

Almost surely, 2^22961816402 is an apocalyptic number.

22961816402 is a deficient number, since it is larger than the sum of its proper divisors (17106827845).

22961816402 is an frugal number, since it uses more digits than its factorization.

22961816402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30630 (or 15316 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 22961816402 in words is "twenty-two billion, nine hundred sixty-one million, eight hundred sixteen thousand, four hundred two".