11661310458 has 48 divisors (see below), whose sum is σ = 30395401920. Its totient is φ = 3156444288.

The previous prime is 11661310457. The next prime is 11661310469. The reversal of 11661310458 is 85401316611.

It is a happy number.

11661310458 is a `hidden beast` number, since 11 + 66 + 131 + 0 + 458 = 666.

It is not an unprimeable number, because it can be changed into a prime (11661310457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2433135 + ... + 2437922.

It is an arithmetic number, because the mean of its divisors is an integer number (633237540).

Almost surely, 2^11661310458 is an apocalyptic number.

11661310458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11661310458 is an abundant number, since it is smaller than the sum of its proper divisors (18734091462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661310458 is a wasteful number, since it uses less digits than its factorization.

11661310458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871091 (or 4871088 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 11661310458 in words is "eleven billion, six hundred sixty-one million, three hundred ten thousand, four hundred fifty-eight".