11651638317 has 8 divisors (see below), whose sum is σ = 16947837600. Its totient is φ = 7061598960.

The previous prime is 11651638309. The next prime is 11651638321. The reversal of 11651638317 is 71383615611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11651638317 - 2³ = 11651638309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11651638387) 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, 176539942 + ... + 176540007.

It is an arithmetic number, because the mean of its divisors is an integer number (2118479700).

Almost surely, 2^11651638317 is an apocalyptic number.

It is an amenable number.

11651638317 is a deficient number, since it is larger than the sum of its proper divisors (5296199283).

11651638317 is a wasteful number, since it uses less digits than its factorization.

11651638317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353079963.

The product of its digits is 90720, while the sum is 42.

The spelling of 11651638317 in words is "eleven billion, six hundred fifty-one million, six hundred thirty-eight thousand, three hundred seventeen".