11707642311561 has 12 divisors (see below), whose sum is σ = 19326901593792. Its totient is φ = 6690081320856.

The previous prime is 11707642311559. The next prime is 11707642311581. The reversal of 11707642311561 is 16511324670711.

11707642311561 is a `hidden beast` number, since 1 + 1 + 7 + 0 + 7 + 64 + 23 + 1 + 1 + 561 = 666.

It is not a de Polignac number, because 11707642311561 - 2¹ = 11707642311559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11707642311581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92917796061 + ... + 92917796186.

It is an arithmetic number, because the mean of its divisors is an integer number (1610575132816).

Almost surely, 2^{11707642311561} is an apocalyptic number.

It is an amenable number.

11707642311561 is a deficient number, since it is larger than the sum of its proper divisors (7619259282231).

11707642311561 is a wasteful number, since it uses less digits than its factorization.

11707642311561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185835592260 (or 185835592257 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 11707642311561 in words is "eleven trillion, seven hundred seven billion, six hundred forty-two million, three hundred eleven thousand, five hundred sixty-one".