1083999492720 has 320 divisors, whose sum is σ = 3937636070400. Its totient is φ = 273340707840.

The previous prime is 1083999492691. The next prime is 1083999492761. The reversal of 1083999492720 is 272949993801.

1083999492720 is a `hidden beast` number, since 1 + 0 + 8 + 39 + 99 + 492 + 7 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22178229 + ... + 22227051.

It is an arithmetic number, because the mean of its divisors is an integer number (12305112720).

Almost surely, 2^{1083999492720} is an apocalyptic number.

1083999492720 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 1083999492720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1968818035200).

1083999492720 is an abundant number, since it is smaller than the sum of its proper divisors (2853636577680).

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

1083999492720 is a wasteful number, since it uses less digits than its factorization.

1083999492720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49405 (or 49393 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 1083999492720 in words is "one trillion, eighty-three billion, nine hundred ninety-nine million, four hundred ninety-two thousand, seven hundred twenty".