15976457089 has 2 divisors, whose sum is σ = 15976457090. Its totient is φ = 15976457088.

The previous prime is 15976457083. The next prime is 15976457117. The reversal of 15976457089 is 98075467951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13367290689 + 2609166400 = 115617^2 + 51080^2 .

It is a cyclic number.

It is not a de Polignac number, because 15976457089 - 2³¹ = 13828973441 is a prime.

It is a super-2 number, since 2×15976457089² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15976457083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7988228544 + 7988228545.

It is an arithmetic number, because the mean of its divisors is an integer number (7988228545).

Almost surely, 2^15976457089 is an apocalyptic number.

It is an amenable number.

15976457089 is a deficient number, since it is larger than the sum of its proper divisors (1).

15976457089 is an equidigital number, since it uses as much as digits as its factorization.

15976457089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 15976457089 in words is "fifteen billion, nine hundred seventy-six million, four hundred fifty-seven thousand, eighty-nine".