11604567761 has 16 divisors (see below), whose sum is σ = 12802406400. Its totient is φ = 10469399808.

The previous prime is 11604567757. The next prime is 11604567769. The reversal of 11604567761 is 16776540611.

It is a cyclic number.

It is not a de Polignac number, because 11604567761 - 2² = 11604567757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11604567769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16145 + ... + 153198.

It is an arithmetic number, because the mean of its divisors is an integer number (800150400).

Almost surely, 2^11604567761 is an apocalyptic number.

It is an amenable number.

11604567761 is a deficient number, since it is larger than the sum of its proper divisors (1197838639).

11604567761 is a wasteful number, since it uses less digits than its factorization.

11604567761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169528.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 11604567761 in words is "eleven billion, six hundred four million, five hundred sixty-seven thousand, seven hundred sixty-one".