1131939779608 has 64 divisors (see below), whose sum is σ = 2343897360000. Its totient is φ = 508191390720.

The previous prime is 1131939779563. The next prime is 1131939779611. The reversal of 1131939779608 is 8069779391311.

It is a super-2 number, since 2×1131939779608² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131939779608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4126591 + ... + 4392337.

It is an arithmetic number, because the mean of its divisors is an integer number (36623396250).

Almost surely, 2^{1131939779608} 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 1131939779608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171948680000).

1131939779608 is an abundant number, since it is smaller than the sum of its proper divisors (1211957580392).

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

1131939779608 is a wasteful number, since it uses less digits than its factorization.

1131939779608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266360 (or 266356 counting only the distinct ones).

The product of its (nonzero) digits is 15431472, while the sum is 64.

The spelling of 1131939779608 in words is "one trillion, one hundred thirty-one billion, nine hundred thirty-nine million, seven hundred seventy-nine thousand, six hundred eight".