15452660681 has 2 divisors, whose sum is σ = 15452660682. Its totient is φ = 15452660680.

The previous prime is 15452660609. The next prime is 15452660687. The reversal of 15452660681 is 18606625451.

15452660681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12434257081 + 3018403600 = 111509^2 + 54940^2 .

It is a cyclic number.

It is not a de Polignac number, because 15452660681 - 2¹⁴ = 15452644297 is a prime.

It is a super-2 number, since 2×15452660681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15452660687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7726330340 + 7726330341.

It is an arithmetic number, because the mean of its divisors is an integer number (7726330341).

Almost surely, 2^15452660681 is an apocalyptic number.

It is an amenable number.

15452660681 is a deficient number, since it is larger than the sum of its proper divisors (1).

15452660681 is an equidigital number, since it uses as much as digits as its factorization.

15452660681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 15452660681 in words is "fifteen billion, four hundred fifty-two million, six hundred sixty thousand, six hundred eighty-one".