22040402664 has 48 divisors (see below), whose sum is σ = 64097092800. Its totient is φ = 6297257568.

The previous prime is 22040402567. The next prime is 22040402693. The reversal of 22040402664 is 46620404022.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9369744 + ... + 9372095.

It is an arithmetic number, because the mean of its divisors is an integer number (1335356100).

Almost surely, 2^22040402664 is an apocalyptic number.

22040402664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22040402664 is an abundant number, since it is smaller than the sum of its proper divisors (42056690136).

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

22040402664 is a wasteful number, since it uses less digits than its factorization.

22040402664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18741862 (or 18741851 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 22040402664 its reverse (46620404022), we get a palindrome (68660806686).

The spelling of 22040402664 in words is "twenty-two billion, forty million, four hundred two thousand, six hundred sixty-four".