38687166761 has 2 divisors, whose sum is σ = 38687166762. Its totient is φ = 38687166760.

The previous prime is 38687166719. The next prime is 38687166803. The reversal of 38687166761 is 16766178683.

It is a balanced prime because it is at equal distance from previous prime (38687166719) and next prime (38687166803).

It can be written as a sum of positive squares in only one way, i.e., 34313857600 + 4373309161 = 185240^2 + 66131^2 .

It is a cyclic number.

It is not a de Polignac number, because 38687166761 - 2⁶ = 38687166697 is a prime.

It is a super-2 number, since 2×38687166761² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38687166761.

It is not a weakly prime, because it can be changed into another prime (38687166361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19343583380 + 19343583381.

It is an arithmetic number, because the mean of its divisors is an integer number (19343583381).

Almost surely, 2^38687166761 is an apocalyptic number.

It is an amenable number.

38687166761 is a deficient number, since it is larger than the sum of its proper divisors (1).

38687166761 is an equidigital number, since it uses as much as digits as its factorization.

38687166761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 59.

The spelling of 38687166761 in words is "thirty-eight billion, six hundred eighty-seven million, one hundred sixty-six thousand, seven hundred sixty-one".