1111509021832 has 64 divisors (see below), whose sum is σ = 2317563316800. Its totient is φ = 495526026240.

The previous prime is 1111509021811. The next prime is 1111509021859. The reversal of 1111509021832 is 2381209051111.

It is a happy number.

It is a super-2 number, since 2×1111509021832² (a number of 25 digits) contains 22 as substring.

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, 666588 + ... + 1633204.

It is an arithmetic number, because the mean of its divisors is an integer number (36211926825).

Almost surely, 2^{1111509021832} 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 1111509021832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158781658400).

1111509021832 is an abundant number, since it is smaller than the sum of its proper divisors (1206054294968).

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

1111509021832 is a wasteful number, since it uses less digits than its factorization.

1111509021832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966886 (or 966882 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 34.

The spelling of 1111509021832 in words is "one trillion, one hundred eleven billion, five hundred nine million, twenty-one thousand, eight hundred thirty-two".