37464211721 has 2 divisors, whose sum is σ = 37464211722. Its totient is φ = 37464211720.

The previous prime is 37464211651. The next prime is 37464211727. The reversal of 37464211721 is 12711246473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19444908025 + 18019303696 = 139445^2 + 134236^2 .

It is a cyclic number.

It is not a de Polignac number, because 37464211721 - 2¹⁸ = 37463949577 is a prime.

It is not a weakly prime, because it can be changed into another prime (37464211727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18732105860 + 18732105861.

It is an arithmetic number, because the mean of its divisors is an integer number (18732105861).

Almost surely, 2^37464211721 is an apocalyptic number.

It is an amenable number.

37464211721 is a deficient number, since it is larger than the sum of its proper divisors (1).

37464211721 is an equidigital number, since it uses as much as digits as its factorization.

37464211721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The spelling of 37464211721 in words is "thirty-seven billion, four hundred sixty-four million, two hundred eleven thousand, seven hundred twenty-one".