15870662441 has 2 divisors, whose sum is σ = 15870662442. Its totient is φ = 15870662440.

The previous prime is 15870662417. The next prime is 15870662449. The reversal of 15870662441 is 14426607851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11876422441 + 3994240000 = 108979^2 + 63200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15870662441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15870662392 and 15870662401.

It is not a weakly prime, because it can be changed into another prime (15870662449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7935331220 + 7935331221.

It is an arithmetic number, because the mean of its divisors is an integer number (7935331221).

Almost surely, 2^15870662441 is an apocalyptic number.

It is an amenable number.

15870662441 is a deficient number, since it is larger than the sum of its proper divisors (1).

15870662441 is an equidigital number, since it uses as much as digits as its factorization.

15870662441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 15870662441 in words is "fifteen billion, eight hundred seventy million, six hundred sixty-two thousand, four hundred forty-one".