162984439657 has 32 divisors (see below), whose sum is σ = 186141352320. Its totient is φ = 141466590720.

The previous prime is 162984439621. The next prime is 162984439663. The reversal of 162984439657 is 756934489261.

It is a de Polignac number, because none of the positive numbers 2^k-162984439657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (162984439687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21552157 + ... + 21559717.

It is an arithmetic number, because the mean of its divisors is an integer number (5816917260).

Almost surely, 2^162984439657 is an apocalyptic number.

It is an amenable number.

162984439657 is a deficient number, since it is larger than the sum of its proper divisors (23156912663).

162984439657 is a wasteful number, since it uses less digits than its factorization.

162984439657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8233.

The product of its digits is 78382080, while the sum is 64.

The spelling of 162984439657 in words is "one hundred sixty-two billion, nine hundred eighty-four million, four hundred thirty-nine thousand, six hundred fifty-seven".