15461207705081 has 2 divisors, whose sum is σ = 15461207705082. Its totient is φ = 15461207705080.

The previous prime is 15461207705029. The next prime is 15461207705089. The reversal of 15461207705081 is 18050770216451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9164666382400 + 6296541322681 = 3027320^2 + 2509291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15461207705081 is a prime.

It is a super-2 number, since 2×15461207705081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15461207705089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7730603852540 + 7730603852541.

It is an arithmetic number, because the mean of its divisors is an integer number (7730603852541).

Almost surely, 2^{15461207705081} is an apocalyptic number.

It is an amenable number.

15461207705081 is a deficient number, since it is larger than the sum of its proper divisors (1).

15461207705081 is an equidigital number, since it uses as much as digits as its factorization.

15461207705081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 15461207705081 in words is "fifteen trillion, four hundred sixty-one billion, two hundred seven million, seven hundred five thousand, eighty-one".