913776978312 has 96 divisors (see below), whose sum is σ = 2700970272000. Its totient is φ = 276781637760.

The previous prime is 913776978299. The next prime is 913776978313. The reversal of 913776978312 is 213879677319.

913776978312 is a `hidden beast` number, since 91 + 377 + 6 + 97 + 83 + 12 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 913776978312.

It is not an unprimeable number, because it can be changed into a prime (913776978313) 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, 1578889 + ... + 2078567.

It is an arithmetic number, because the mean of its divisors is an integer number (28135107000).

Almost surely, 2^913776978312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 913776978312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350485136000).

913776978312 is an abundant number, since it is smaller than the sum of its proper divisors (1787193293688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

913776978312 is a wasteful number, since it uses less digits than its factorization.

913776978312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502011 (or 502004 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

The spelling of 913776978312 in words is "nine hundred thirteen billion, seven hundred seventy-six million, nine hundred seventy-eight thousand, three hundred twelve".