37161771749 has 2 divisors, whose sum is σ = 37161771750. Its totient is φ = 37161771748.

The previous prime is 37161771727. The next prime is 37161771767. The reversal of 37161771749 is 94717716173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36350091649 + 811680100 = 190657^2 + 28490^2 .

It is a cyclic number.

It is not a de Polignac number, because 37161771749 - 2²⁴ = 37144994533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37161771749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37161776749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18580885874 + 18580885875.

It is an arithmetic number, because the mean of its divisors is an integer number (18580885875).

Almost surely, 2^37161771749 is an apocalyptic number.

It is an amenable number.

37161771749 is a deficient number, since it is larger than the sum of its proper divisors (1).

37161771749 is an equidigital number, since it uses as much as digits as its factorization.

37161771749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555848, while the sum is 53.

The spelling of 37161771749 in words is "thirty-seven billion, one hundred sixty-one million, seven hundred seventy-one thousand, seven hundred forty-nine".