15051261433561 has 2 divisors, whose sum is σ = 15051261433562. Its totient is φ = 15051261433560.

The previous prime is 15051261433547. The next prime is 15051261433627. The reversal of 15051261433561 is 16533416215051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7797832851600 + 7253428581961 = 2792460^2 + 2693219^2 .

It is a cyclic number.

It is not a de Polignac number, because 15051261433561 - 2¹⁹ = 15051260909273 is a prime.

It is not a weakly prime, because it can be changed into another prime (15051261433511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7525630716780 + 7525630716781.

It is an arithmetic number, because the mean of its divisors is an integer number (7525630716781).

Almost surely, 2^{15051261433561} is an apocalyptic number.

It is an amenable number.

15051261433561 is a deficient number, since it is larger than the sum of its proper divisors (1).

15051261433561 is an equidigital number, since it uses as much as digits as its factorization.

15051261433561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 15051261433561 in words is "fifteen trillion, fifty-one billion, two hundred sixty-one million, four hundred thirty-three thousand, five hundred sixty-one".