1081201819600 has 120 divisors (see below), whose sum is σ = 3048905932928. Its totient is φ = 360678873600.

The previous prime is 1081201819541. The next prime is 1081201819661. The reversal of 1081201819600 is 69181021801.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 1081201819600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5114556 + ... + 5321755.

Almost surely, 2^{1081201819600} is an apocalyptic number.

1081201819600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081201819600 is an abundant number, since it is smaller than the sum of its proper divisors (1967704113328).

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

1081201819600 is a wasteful number, since it uses less digits than its factorization.

1081201819600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436373 (or 10436362 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 37.

The spelling of 1081201819600 in words is "one trillion, eighty-one billion, two hundred one million, eight hundred nineteen thousand, six hundred".