11661456494 has 8 divisors (see below), whose sum is σ = 17505613200. Its totient is φ = 5826252096.

The previous prime is 11661456491. The next prime is 11661456551. The reversal of 11661456494 is 49465416611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11661456494² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661456491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2234819 + ... + 2240030.

It is an arithmetic number, because the mean of its divisors is an integer number (2188201650).

Almost surely, 2^11661456494 is an apocalyptic number.

11661456494 is a deficient number, since it is larger than the sum of its proper divisors (5844156706).

11661456494 is a wasteful number, since it uses less digits than its factorization.

11661456494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476154.

The product of its digits is 622080, while the sum is 47.

The spelling of 11661456494 in words is "eleven billion, six hundred sixty-one million, four hundred fifty-six thousand, four hundred ninety-four".