162665749957 has 2 divisors, whose sum is σ = 162665749958. Its totient is φ = 162665749956.

The previous prime is 162665749949. The next prime is 162665750021. The reversal of 162665749957 is 759947566261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135977300001 + 26688449956 = 368751^2 + 163366^2 .

It is a cyclic number.

It is not a de Polignac number, because 162665749957 - 2³ = 162665749949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 162665749892 and 162665749901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162665749937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81332874978 + 81332874979.

It is an arithmetic number, because the mean of its divisors is an integer number (81332874979).

Almost surely, 2^162665749957 is an apocalyptic number.

It is an amenable number.

162665749957 is a deficient number, since it is larger than the sum of its proper divisors (1).

162665749957 is an equidigital number, since it uses as much as digits as its factorization.

162665749957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 171460800, while the sum is 67.

The spelling of 162665749957 in words is "one hundred sixty-two billion, six hundred sixty-five million, seven hundred forty-nine thousand, nine hundred fifty-seven".