11687130697 has 12 divisors (see below), whose sum is σ = 12850283908. Its totient is φ = 10621274400.

The previous prime is 11687130667. The next prime is 11687130757. The reversal of 11687130697 is 79603178611.

It can be written as a sum of positive squares in 2 ways, for example, as 3612490816 + 8074639881 = 60104^2 + 89859^2 .

It is not a de Polignac number, because 11687130697 - 2⁷ = 11687130569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11687130697.

It is not an unprimeable number, because it can be changed into a prime (11687130667) 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, 414823 + ... + 442099.

Almost surely, 2^11687130697 is an apocalyptic number.

It is an amenable number.

11687130697 is a deficient number, since it is larger than the sum of its proper divisors (1163153211).

11687130697 is a wasteful number, since it uses less digits than its factorization.

11687130697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30840 (or 30829 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 11687130697 in words is "eleven billion, six hundred eighty-seven million, one hundred thirty thousand, six hundred ninety-seven".