22646040040 has 64 divisors (see below), whose sum is σ = 56211518160. Its totient is φ = 8157665280.

The previous prime is 22646040029. The next prime is 22646040059. The reversal of 22646040040 is 4004064622.

It can be written as a sum of positive squares in 8 ways, for example, as 1095212836 + 21550827204 = 33094^2 + 146802^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22646039990 and 22646040008.

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, 509779 + ... + 552418.

Almost surely, 2^22646040040 is an apocalyptic number.

22646040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22646040040 is an abundant number, since it is smaller than the sum of its proper divisors (33565478120).

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

22646040040 is a wasteful number, since it uses less digits than its factorization.

22646040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062262 (or 1062258 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 22646040040 in words is "twenty-two billion, six hundred forty-six million, forty thousand, forty".