15993000761 has 2 divisors, whose sum is σ = 15993000762. Its totient is φ = 15993000760.

The previous prime is 15993000721. The next prime is 15993000769. The reversal of 15993000761 is 16700039951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8976425536 + 7016575225 = 94744^2 + 83765^2 .

It is a cyclic number.

It is not a de Polignac number, because 15993000761 - 2⁶ = 15993000697 is a prime.

It is not a weakly prime, because it can be changed into another prime (15993000769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7996500380 + 7996500381.

It is an arithmetic number, because the mean of its divisors is an integer number (7996500381).

Almost surely, 2^15993000761 is an apocalyptic number.

It is an amenable number.

15993000761 is a deficient number, since it is larger than the sum of its proper divisors (1).

15993000761 is an equidigital number, since it uses as much as digits as its factorization.

15993000761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 41.

The spelling of 15993000761 in words is "fifteen billion, nine hundred ninety-three million, seven hundred sixty-one", and thus it is an aban number.