37879448070721 has 2 divisors, whose sum is σ = 37879448070722. Its totient is φ = 37879448070720.

The previous prime is 37879448070707. The next prime is 37879448070767. The reversal of 37879448070721 is 12707084497873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24096710145600 + 13782737925121 = 4908840^2 + 3712511^2 .

It is an emirp because it is prime and its reverse (12707084497873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37879448070721 - 2²¹ = 37879445973569 is a prime.

It is a super-2 number, since 2×37879448070721² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37879448970721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18939724035360 + 18939724035361.

It is an arithmetic number, because the mean of its divisors is an integer number (18939724035361).

Almost surely, 2^{37879448070721} is an apocalyptic number.

It is an amenable number.

37879448070721 is a deficient number, since it is larger than the sum of its proper divisors (1).

37879448070721 is an equidigital number, since it uses as much as digits as its factorization.

37879448070721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132765696, while the sum is 67.

The spelling of 37879448070721 in words is "thirty-seven trillion, eight hundred seventy-nine billion, four hundred forty-eight million, seventy thousand, seven hundred twenty-one".