37212694721 has 8 divisors (see below), whose sum is σ = 37806153000. Its totient is φ = 36623819520.

The previous prime is 37212694691. The next prime is 37212694747. The reversal of 37212694721 is 12749621273.

It can be written as a sum of positive squares in 4 ways, for example, as 3406356496 + 33806338225 = 58364^2 + 183865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37212694721 - 2³⁰ = 36138952897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37212696721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129400 + ... + 1161881.

It is an arithmetic number, because the mean of its divisors is an integer number (4725769125).

Almost surely, 2^37212694721 is an apocalyptic number.

It is an amenable number.

37212694721 is a deficient number, since it is larger than the sum of its proper divisors (593458279).

37212694721 is a wasteful number, since it uses less digits than its factorization.

37212694721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291539.

The product of its digits is 254016, while the sum is 44.

The spelling of 37212694721 in words is "thirty-seven billion, two hundred twelve million, six hundred ninety-four thousand, seven hundred twenty-one".