22001600747620 has 24 divisors (see below), whose sum is σ = 49757466306744. Its totient is φ = 8123667968256.

The previous prime is 22001600747593. The next prime is 22001600747657. The reversal of 22001600747620 is 2674700610022.

It can be written as a sum of positive squares in 4 ways, for example, as 22486564 + 22001578261056 = 4742^2 + 4690584^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22001600747620.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42310770409 + ... + 42310770928.

It is an arithmetic number, because the mean of its divisors is an integer number (2073227762781).

Almost surely, 2^{22001600747620} is an apocalyptic number.

22001600747620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001600747620 is an abundant number, since it is smaller than the sum of its proper divisors (27755865559124).

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

22001600747620 is a wasteful number, since it uses less digits than its factorization.

22001600747620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84621541359 (or 84621541357 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 22001600747620 in words is "twenty-two trillion, one billion, six hundred million, seven hundred forty-seven thousand, six hundred twenty".