23642014661 has 2 divisors, whose sum is σ = 23642014662. Its totient is φ = 23642014660.

The previous prime is 23642014657. The next prime is 23642014673. The reversal of 23642014661 is 16641024632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20639632225 + 3002382436 = 143665^2 + 54794^2 .

It is a cyclic number.

It is not a de Polignac number, because 23642014661 - 2² = 23642014657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23642014651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11821007330 + 11821007331.

It is an arithmetic number, because the mean of its divisors is an integer number (11821007331).

Almost surely, 2^23642014661 is an apocalyptic number.

It is an amenable number.

23642014661 is a deficient number, since it is larger than the sum of its proper divisors (1).

23642014661 is an equidigital number, since it uses as much as digits as its factorization.

23642014661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 23642014661 in words is "twenty-three billion, six hundred forty-two million, fourteen thousand, six hundred sixty-one".