1172912899284 has 120 divisors (see below), whose sum is σ = 3523620067968. Its totient is φ = 333266374080.

The previous prime is 1172912899261. The next prime is 1172912899289. The reversal of 1172912899284 is 4829982192711.

1172912899284 is a `hidden beast` number, since 1 + 1 + 72 + 9 + 1 + 289 + 9 + 284 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172912899289) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1018104 + ... + 1839119.

Almost surely, 2^{1172912899284} is an apocalyptic number.

1172912899284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1172912899284 is an abundant number, since it is smaller than the sum of its proper divisors (2350707168684).

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

1172912899284 is a wasteful number, since it uses less digits than its factorization.

1172912899284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857427 (or 2857416 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 63.

The spelling of 1172912899284 in words is "one trillion, one hundred seventy-two billion, nine hundred twelve million, eight hundred ninety-nine thousand, two hundred eighty-four".