15211392461 has 2 divisors, whose sum is σ = 15211392462. Its totient is φ = 15211392460.

The previous prime is 15211392433. The next prime is 15211392473. The reversal of 15211392461 is 16429311251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14739416836 + 471975625 = 121406^2 + 21725^2 .

It is a cyclic number.

It is not a de Polignac number, because 15211392461 - 2¹⁸ = 15211130317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15211392061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7605696230 + 7605696231.

It is an arithmetic number, because the mean of its divisors is an integer number (7605696231).

Almost surely, 2^15211392461 is an apocalyptic number.

It is an amenable number.

15211392461 is a deficient number, since it is larger than the sum of its proper divisors (1).

15211392461 is an equidigital number, since it uses as much as digits as its factorization.

15211392461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The spelling of 15211392461 in words is "fifteen billion, two hundred eleven million, three hundred ninety-two thousand, four hundred sixty-one".