15466664489 has 2 divisors, whose sum is σ = 15466664490. Its totient is φ = 15466664488.

The previous prime is 15466664467. The next prime is 15466664501. The reversal of 15466664489 is 98446666451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9858901264 + 5607763225 = 99292^2 + 74885^2 .

It is a cyclic number.

It is not a de Polignac number, because 15466664489 - 2²⁴ = 15449887273 is a prime.

It is a super-2 number, since 2×15466664489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15466664459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7733332244 + 7733332245.

It is an arithmetic number, because the mean of its divisors is an integer number (7733332245).

Almost surely, 2^15466664489 is an apocalyptic number.

It is an amenable number.

15466664489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15466664489 is an equidigital number, since it uses as much as digits as its factorization.

15466664489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29859840, while the sum is 59.

The spelling of 15466664489 in words is "fifteen billion, four hundred sixty-six million, six hundred sixty-four thousand, four hundred eighty-nine".