1135999579320 has 192 divisors, whose sum is σ = 3816280166400. Its totient is φ = 292762356480.

The previous prime is 1135999579307. The next prime is 1135999579343. The reversal of 1135999579320 is 239759995311.

1135999579320 is a `hidden beast` number, since 1 + 1 + 3 + 59 + 9 + 9 + 579 + 3 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8178369 + ... + 8316111.

It is an arithmetic number, because the mean of its divisors is an integer number (19876459200).

Almost surely, 2^{1135999579320} is an apocalyptic number.

1135999579320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1135999579320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908140083200).

1135999579320 is an abundant number, since it is smaller than the sum of its proper divisors (2680280587080).

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

1135999579320 is a wasteful number, since it uses less digits than its factorization.

1135999579320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138530 (or 138523 counting only the distinct ones).

The product of its (nonzero) digits is 20667150, while the sum is 63.

The spelling of 1135999579320 in words is "one trillion, one hundred thirty-five billion, nine hundred ninety-nine million, five hundred seventy-nine thousand, three hundred twenty".