869996537091 has 24 divisors (see below), whose sum is σ = 1371533117760. Its totient is φ = 527028519600.

The previous prime is 869996537089. The next prime is 869996537117. The reversal of 869996537091 is 190735699968.

869996537091 is a `hidden beast` number, since 86 + 9 + 9 + 9 + 6 + 537 + 0 + 9 + 1 = 666.

869996537091 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 869996537091 - 2¹ = 869996537089 is a prime.

It is a super-3 number, since 3×869996537091³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (869996537191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1800765 + ... + 2232206.

It is an arithmetic number, because the mean of its divisors is an integer number (57147213240).

Almost surely, 2^869996537091 is an apocalyptic number.

869996537091 is a deficient number, since it is larger than the sum of its proper divisors (501536580669).

869996537091 is a wasteful number, since it uses less digits than its factorization.

869996537091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035167 (or 4035164 counting only the distinct ones).

The product of its (nonzero) digits is 198404640, while the sum is 72.

The spelling of 869996537091 in words is "eight hundred sixty-nine billion, nine hundred ninety-six million, five hundred thirty-seven thousand, ninety-one".