2162687999957 has 2 divisors, whose sum is σ = 2162687999958. Its totient is φ = 2162687999956.

The previous prime is 2162687999951. The next prime is 2162688000013. The reversal of 2162687999957 is 7599997862612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1621685090116 + 541002909841 = 1273454^2 + 735529^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162687999957 - 2⁸ = 2162687999701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2162687999951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081343999978 + 1081343999979.

It is an arithmetic number, because the mean of its divisors is an integer number (1081343999979).

Almost surely, 2^{2162687999957} is an apocalyptic number.

It is an amenable number.

2162687999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162687999957 is an equidigital number, since it uses as much as digits as its factorization.

2162687999957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1851776640, while the sum is 80.

The spelling of 2162687999957 in words is "two trillion, one hundred sixty-two billion, six hundred eighty-seven million, nine hundred ninety-nine thousand, nine hundred fifty-seven".