912861869489 has 4 divisors (see below), whose sum is σ = 913067149824. Its totient is φ = 912656589156.

The previous prime is 912861869401. The next prime is 912861869509. The reversal of 912861869489 is 984968168219.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-912861869489 is a prime.

It is a super-2 number, since 2×912861869489² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (912861869389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102633497 + ... + 102642390.

It is an arithmetic number, because the mean of its divisors is an integer number (228266787456).

Almost surely, 2^912861869489 is an apocalyptic number.

It is an amenable number.

912861869489 is a deficient number, since it is larger than the sum of its proper divisors (205280335).

912861869489 is a wasteful number, since it uses less digits than its factorization.

912861869489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205280334.

The product of its digits is 107495424, while the sum is 71.

The spelling of 912861869489 in words is "nine hundred twelve billion, eight hundred sixty-one million, eight hundred sixty-nine thousand, four hundred eighty-nine".