37145079721 has 4 divisors (see below), whose sum is σ = 37189353600. Its totient is φ = 37100805844.

The previous prime is 37145079691. The next prime is 37145079773. The reversal of 37145079721 is 12797054173.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 37145079721 - 2⁷ = 37145079593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37145079121) by changing a digit.

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, 22135681 + ... + 22137358.

It is an arithmetic number, because the mean of its divisors is an integer number (9297338400).

Almost surely, 2^37145079721 is an apocalyptic number.

It is an amenable number.

37145079721 is a deficient number, since it is larger than the sum of its proper divisors (44273879).

37145079721 is an equidigital number, since it uses as much as digits as its factorization.

37145079721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44273878.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 37145079721 in words is "thirty-seven billion, one hundred forty-five million, seventy-nine thousand, seven hundred twenty-one".