37971617972 has 12 divisors (see below), whose sum is σ = 66457892676. Its totient is φ = 18983648640.

The previous prime is 37971617947. The next prime is 37971618011. The reversal of 37971617972 is 27971617973.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33769207696 + 4202410276 = 183764^2 + 64826^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500213 + ... + 571100.

It is an arithmetic number, because the mean of its divisors is an integer number (5538157723).

Almost surely, 2^37971617972 is an apocalyptic number.

It is an amenable number.

37971617972 is a deficient number, since it is larger than the sum of its proper divisors (28486274704).

37971617972 is a wasteful number, since it uses less digits than its factorization.

37971617972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080178 (or 1080176 counting only the distinct ones).

The product of its digits is 7001316, while the sum is 59.

Subtracting from 37971617972 its reverse (27971617973), we obtain a palindrome (9999999999).

The spelling of 37971617972 in words is "thirty-seven billion, nine hundred seventy-one million, six hundred seventeen thousand, nine hundred seventy-two".