15897605741 has 2 divisors, whose sum is σ = 15897605742. Its totient is φ = 15897605740.

The previous prime is 15897605621. The next prime is 15897605753. The reversal of 15897605741 is 14750679851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9361530025 + 6536075716 = 96755^2 + 80846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15897605741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15897605791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7948802870 + 7948802871.

It is an arithmetic number, because the mean of its divisors is an integer number (7948802871).

Almost surely, 2^15897605741 is an apocalyptic number.

It is an amenable number.

15897605741 is a deficient number, since it is larger than the sum of its proper divisors (1).

15897605741 is an equidigital number, since it uses as much as digits as its factorization.

15897605741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 15897605741 in words is "fifteen billion, eight hundred ninety-seven million, six hundred five thousand, seven hundred forty-one".