11866497605 has 8 divisors (see below), whose sum is σ = 14240740992. Its totient is φ = 9492568848.

The previous prime is 11866497563. The next prime is 11866497647. The reversal of 11866497605 is 50679466811.

It is an interprime number because it is at equal distance from previous prime (11866497563) and next prime (11866497647).

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 11866497605 - 2²⁸ = 11598062149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14312 + ... + 154718.

It is an arithmetic number, because the mean of its divisors is an integer number (1780092624).

Almost surely, 2^11866497605 is an apocalyptic number.

It is an amenable number.

11866497605 is a deficient number, since it is larger than the sum of its proper divisors (2374243387).

11866497605 is a wasteful number, since it uses less digits than its factorization.

11866497605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157315.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 11866497605 in words is "eleven billion, eight hundred sixty-six million, four hundred ninety-seven thousand, six hundred five".