1204992109872 has 120 divisors (see below), whose sum is σ = 3592057656096. Its totient is φ = 375772919808.

The previous prime is 1204992109843. The next prime is 1204992109879. The reversal of 1204992109872 is 2789012994021.

It is a happy number.

1204992109872 is a `hidden beast` number, since 120 + 499 + 21 + 0 + 9 + 8 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1204992109879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1064943 + ... + 1882574.

Almost surely, 2^{1204992109872} is an apocalyptic number.

1204992109872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1204992109872 is an abundant number, since it is smaller than the sum of its proper divisors (2387065546224).

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

1204992109872 is a wasteful number, since it uses less digits than its factorization.

1204992109872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947715 (or 2947706 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 1204992109872 in words is "one trillion, two hundred four billion, nine hundred ninety-two million, one hundred nine thousand, eight hundred seventy-two".