860251766761 has 2 divisors, whose sum is σ = 860251766762. Its totient is φ = 860251766760.

The previous prime is 860251766753. The next prime is 860251766789. The reversal of 860251766761 is 167667152068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621643941136 + 238607825625 = 788444^2 + 488475^2 .

It is a cyclic number.

It is not a de Polignac number, because 860251766761 - 2³ = 860251766753 is a prime.

It is a super-2 number, since 2×860251766761² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (860251766791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430125883380 + 430125883381.

It is an arithmetic number, because the mean of its divisors is an integer number (430125883381).

Almost surely, 2^860251766761 is an apocalyptic number.

It is an amenable number.

860251766761 is a deficient number, since it is larger than the sum of its proper divisors (1).

860251766761 is an equidigital number, since it uses as much as digits as its factorization.

860251766761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 860251766761 in words is "eight hundred sixty billion, two hundred fifty-one million, seven hundred sixty-six thousand, seven hundred sixty-one".