22662647640 has 128 divisors (see below), whose sum is σ = 79985880000. Its totient is φ = 5687875584.

The previous prime is 22662647629. The next prime is 22662647647. The reversal of 22662647640 is 4674626622.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22662647647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 598815 + ... + 635534.

Almost surely, 2^22662647640 is an apocalyptic number.

22662647640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22662647640 is an abundant number, since it is smaller than the sum of its proper divisors (57323232360).

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

22662647640 is a wasteful number, since it uses less digits than its factorization.

22662647640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234386 (or 1234376 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 22662647640 in words is "twenty-two billion, six hundred sixty-two million, six hundred forty-seven thousand, six hundred forty".