11405413661 has 8 divisors (see below), whose sum is σ = 11694883200. Its totient is φ = 11116481760.

The previous prime is 11405413631. The next prime is 11405413681. The reversal of 11405413661 is 16631450411.

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 11405413661 - 2⁶ = 11405413597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405413601) 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, 91271 + ... + 176468.

It is an arithmetic number, because the mean of its divisors is an integer number (1461860400).

Almost surely, 2^11405413661 is an apocalyptic number.

It is an amenable number.

11405413661 is a deficient number, since it is larger than the sum of its proper divisors (289469539).

11405413661 is a wasteful number, since it uses less digits than its factorization.

11405413661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268819.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 11405413661 in words is "eleven billion, four hundred five million, four hundred thirteen thousand, six hundred sixty-one".