37827621668 has 6 divisors (see below), whose sum is σ = 66198337926. Its totient is φ = 18913810832.

The previous prime is 37827621593. The next prime is 37827621677. The reversal of 37827621668 is 86612672873.

37827621668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 25062689344 + 12764932324 = 158312^2 + 112982^2 .

It is a super-2 number, since 2×37827621668² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4728452705 + ... + 4728452712.

It is an arithmetic number, because the mean of its divisors is an integer number (11033056321).

Almost surely, 2^37827621668 is an apocalyptic number.

It is an amenable number.

37827621668 is a deficient number, since it is larger than the sum of its proper divisors (28370716258).

37827621668 is a wasteful number, since it uses less digits than its factorization.

37827621668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456905421 (or 9456905419 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 56.

The spelling of 37827621668 in words is "thirty-seven billion, eight hundred twenty-seven million, six hundred twenty-one thousand, six hundred sixty-eight".