22620904906840 has 32 divisors (see below), whose sum is σ = 50974979492880. Its totient is φ = 9034505348992.

The previous prime is 22620904906837. The next prime is 22620904906843. The reversal of 22620904906840 is 4860940902622.

It is an interprime number because it is at equal distance from previous prime (22620904906837) and next prime (22620904906843).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22620904906843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432992734 + ... + 433044973.

Almost surely, 2^{22620904906840} is an apocalyptic number.

22620904906840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22620904906840 is an abundant number, since it is smaller than the sum of its proper divisors (28354074586040).

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

22620904906840 is a wasteful number, since it uses less digits than its factorization.

22620904906840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866038371 (or 866038367 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 22620904906840 in words is "twenty-two trillion, six hundred twenty billion, nine hundred four million, nine hundred six thousand, eight hundred forty".