22640648455207 has 4 divisors (see below), whose sum is σ = 22640658029640. Its totient is φ = 22640638880776.

The previous prime is 22640648455181. The next prime is 22640648455273. The reversal of 22640648455207 is 70255484604622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22640648455207 - 2¹⁵ = 22640648422439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22640648455277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604448 + ... + 6917770.

It is an arithmetic number, because the mean of its divisors is an integer number (5660164507410).

Almost surely, 2^{22640648455207} is an apocalyptic number.

22640648455207 is a deficient number, since it is larger than the sum of its proper divisors (9574433).

22640648455207 is an equidigital number, since it uses as much as digits as its factorization.

22640648455207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9574432.

The product of its (nonzero) digits is 25804800, while the sum is 55.

The spelling of 22640648455207 in words is "twenty-two trillion, six hundred forty billion, six hundred forty-eight million, four hundred fifty-five thousand, two hundred seven".