22518039641 has 2 divisors, whose sum is σ = 22518039642. Its totient is φ = 22518039640.

The previous prime is 22518039613. The next prime is 22518039703. The reversal of 22518039641 is 14693081522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15327678025 + 7190361616 = 123805^2 + 84796^2 .

It is a cyclic number.

It is not a de Polignac number, because 22518039641 - 2²² = 22513845337 is a prime.

It is not a weakly prime, because it can be changed into another prime (22518030641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11259019820 + 11259019821.

It is an arithmetic number, because the mean of its divisors is an integer number (11259019821).

Almost surely, 2^22518039641 is an apocalyptic number.

It is an amenable number.

22518039641 is a deficient number, since it is larger than the sum of its proper divisors (1).

22518039641 is an equidigital number, since it uses as much as digits as its factorization.

22518039641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 22518039641 in words is "twenty-two billion, five hundred eighteen million, thirty-nine thousand, six hundred forty-one".