22418769640 has 32 divisors (see below), whose sum is σ = 50448598560. Its totient is φ = 8966376000.

The previous prime is 22418769613. The next prime is 22418769671. The reversal of 22418769640 is 4696781422.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332815 + ... + 394465.

It is an arithmetic number, because the mean of its divisors is an integer number (1576518705).

Almost surely, 2^22418769640 is an apocalyptic number.

22418769640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22418769640 is an abundant number, since it is smaller than the sum of its proper divisors (28029828920).

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

22418769640 is a wasteful number, since it uses less digits than its factorization.

22418769640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70753 (or 70749 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 22418769640 in words is "twenty-two billion, four hundred eighteen million, seven hundred sixty-nine thousand, six hundred forty".