971845632137 has 16 divisors (see below), whose sum is σ = 1015110150912. Its totient is φ = 928665830400.

The previous prime is 971845632133. The next prime is 971845632167. The reversal of 971845632137 is 731236548179.

It is a cyclic number.

It is not a de Polignac number, because 971845632137 - 2² = 971845632133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971845632133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163966268 + ... + 163972194.

It is an arithmetic number, because the mean of its divisors is an integer number (63444384432).

Almost surely, 2^971845632137 is an apocalyptic number.

It is an amenable number.

971845632137 is a deficient number, since it is larger than the sum of its proper divisors (43264518775).

971845632137 is a wasteful number, since it uses less digits than its factorization.

971845632137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11848.

The product of its digits is 7620480, while the sum is 56.

The spelling of 971845632137 in words is "nine hundred seventy-one billion, eight hundred forty-five million, six hundred thirty-two thousand, one hundred thirty-seven".