11666456453 has 8 divisors (see below), whose sum is σ = 11745866880. Its totient is φ = 11587302720.

The previous prime is 11666456449. The next prime is 11666456471. The reversal of 11666456453 is 35465466611.

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

It is a cyclic number.

It is not a de Polignac number, because 11666456453 - 2² = 11666456449 is a prime.

It is a super-2 number, since 2×11666456453² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11666456398 and 11666456407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666456413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27476 + ... + 155202.

It is an arithmetic number, because the mean of its divisors is an integer number (1468233360).

Almost surely, 2^11666456453 is an apocalyptic number.

It is an amenable number.

11666456453 is a deficient number, since it is larger than the sum of its proper divisors (79410427).

11666456453 is a wasteful number, since it uses less digits than its factorization.

11666456453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128347.

The product of its digits is 1555200, while the sum is 47.

The spelling of 11666456453 in words is "eleven billion, six hundred sixty-six million, four hundred fifty-six thousand, four hundred fifty-three".