1081404979200 has 3456 divisors, whose sum is σ = 5309851397760. Its totient is φ = 203843174400.

The previous prime is 1081404979169. The next prime is 1081404979211. The reversal of 1081404979200 is 29794041801.

It is a happy number.

1081404979200 is a `hidden beast` number, since 10 + 8 + 140 + 497 + 9 + 2 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 26375731180 + ... + 26375731220.

It is an arithmetic number, because the mean of its divisors is an integer number (1536415335).

Almost surely, 2^{1081404979200} is an apocalyptic number.

1081404979200 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 1081404979200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2654925698880).

1081404979200 is an abundant number, since it is smaller than the sum of its proper divisors (4228446418560).

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

1081404979200 is a wasteful number, since it uses less digits than its factorization.

1081404979200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 1081404979200 in words is "one trillion, eighty-one billion, four hundred four million, nine hundred seventy-nine thousand, two hundred".