22640340400505 has 4 divisors (see below), whose sum is σ = 27168408480612. Its totient is φ = 18112272320400.

The previous prime is 22640340400499. The next prime is 22640340400519. The reversal of 22640340400505 is 50500404304622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6665386591081 + 15974953809424 = 2581741^2 + 3996868^2 .

It is not a de Polignac number, because 22640340400505 - 2²⁴ = 22640323623289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2264034040046 + ... + 2264034040055.

It is an arithmetic number, because the mean of its divisors is an integer number (6792102120153).

Almost surely, 2^{22640340400505} is an apocalyptic number.

It is an amenable number.

22640340400505 is a deficient number, since it is larger than the sum of its proper divisors (4528068080107).

22640340400505 is an equidigital number, since it uses as much as digits as its factorization.

22640340400505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528068080106.

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 22640340400505 in words is "twenty-two trillion, six hundred forty billion, three hundred forty million, four hundred thousand, five hundred five".