37961663552 has 28 divisors (see below), whose sum is σ = 77760185856. Its totient is φ = 18368545920.

The previous prime is 37961663539. The next prime is 37961663557. The reversal of 37961663552 is 25536616973.

It is a junction number, because it is equal to n+sod(n) for n = 37961663494 and 37961663503.

It is not an unprimeable number, because it can be changed into a prime (37961663557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9564968 + ... + 9568935.

Almost surely, 2^37961663552 is an apocalyptic number.

37961663552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

37961663552 is an abundant number, since it is smaller than the sum of its proper divisors (39798522304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

37961663552 is a wasteful number, since it uses less digits than its factorization.

37961663552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19133946 (or 19133936 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 53.

The spelling of 37961663552 in words is "thirty-seven billion, nine hundred sixty-one million, six hundred sixty-three thousand, five hundred fifty-two".