15755276291681 has 2 divisors, whose sum is σ = 15755276291682. Its totient is φ = 15755276291680.

The previous prime is 15755276291659. The next prime is 15755276291723. The reversal of 15755276291681 is 18619267255751.

15755276291681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10286670656656 + 5468605635025 = 3207284^2 + 2338505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15755276291681 is a prime.

It is a super-2 number, since 2×15755276291681² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15755276291281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7877638145840 + 7877638145841.

It is an arithmetic number, because the mean of its divisors is an integer number (7877638145841).

Almost surely, 2^{15755276291681} is an apocalyptic number.

It is an amenable number.

15755276291681 is a deficient number, since it is larger than the sum of its proper divisors (1).

15755276291681 is an equidigital number, since it uses as much as digits as its factorization.

15755276291681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504000, while the sum is 65.

The spelling of 15755276291681 in words is "fifteen trillion, seven hundred fifty-five billion, two hundred seventy-six million, two hundred ninety-one thousand, six hundred eighty-one".