11664519458 has 4 divisors (see below), whose sum is σ = 17496779190. Its totient is φ = 5832259728.

The previous prime is 11664519409. The next prime is 11664519467. The reversal of 11664519458 is 85491546611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6854680849 + 4809838609 = 82793^2 + 69353^2 .

It is a super-2 number, since 2×11664519458² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2916129863 + ... + 2916129866.

Almost surely, 2^11664519458 is an apocalyptic number.

11664519458 is a deficient number, since it is larger than the sum of its proper divisors (5832259732).

11664519458 is an equidigital number, since it uses as much as digits as its factorization.

11664519458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832259731.

The product of its digits is 1036800, while the sum is 50.

The spelling of 11664519458 in words is "eleven billion, six hundred sixty-four million, five hundred nineteen thousand, four hundred fifty-eight".