37138051816 has 16 divisors (see below), whose sum is σ = 69638193540. Its totient is φ = 18567866880.

The previous prime is 37138051807. The next prime is 37138051823. The reversal of 37138051816 is 61815083173.

It can be written as a sum of positive squares in 2 ways, for example, as 24177140100 + 12960911716 = 155490^2 + 113846^2 .

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, 201 + ... + 272536.

Almost surely, 2^37138051816 is an apocalyptic number.

It is an amenable number.

37138051816 is a deficient number, since it is larger than the sum of its proper divisors (32500141724).

37138051816 is a wasteful number, since it uses less digits than its factorization.

37138051816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289764 (or 289760 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 37138051816 in words is "thirty-seven billion, one hundred thirty-eight million, fifty-one thousand, eight hundred sixteen".