866156362157131 has 8 divisors (see below), whose sum is σ = 900270381330000. Its totient is φ = 832325446878240.

The previous prime is 866156362157071. The next prime is 866156362157209. The reversal of 866156362157131 is 131751263651668.

866156362157131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-866156362157131 is a prime.

It is a super-2 number, since 2×866156362157131² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 866156362157131.

It is not an unprimeable number, because it can be changed into a prime (866156362457131) 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, 70775967256 + ... + 70775979493.

It is an arithmetic number, because the mean of its divisors is an integer number (112533797666250).

Almost surely, 2^{866156362157131} is an apocalyptic number.

866156362157131 is a deficient number, since it is larger than the sum of its proper divisors (34114019172869).

866156362157131 is a wasteful number, since it uses less digits than its factorization.

866156362157131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141551946989.

The product of its digits is 32659200, while the sum is 61.

The spelling of 866156362157131 in words is "eight hundred sixty-six trillion, one hundred fifty-six billion, three hundred sixty-two million, one hundred fifty-seven thousand, one hundred thirty-one".