1319998996872 has 160 divisors (see below), whose sum is σ = 3924478392120. Its totient is φ = 413083238400.

The previous prime is 1319998996871. The next prime is 1319998996909. The reversal of 1319998996872 is 2786998999131.

1319998996872 is a `hidden beast` number, since 1 + 319 + 9 + 98 + 99 + 68 + 72 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1314155005956 + 5843990916 = 1146366^2 + 76446^2 .

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 1319998996791 and 1319998996800.

It is not an unprimeable number, because it can be changed into a prime (1319998996871) 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, 4268008 + ... + 4566824.

Almost surely, 2^{1319998996872} is an apocalyptic number.

1319998996872 is a gapful number since it is divisible by the number (12) 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 1319998996872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1962239196060).

1319998996872 is an abundant number, since it is smaller than the sum of its proper divisors (2604479395248).

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

1319998996872 is a wasteful number, since it uses less digits than its factorization.

1319998996872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299253 (or 299240 counting only the distinct ones).

The product of its digits is 952342272, while the sum is 81.

The spelling of 1319998996872 in words is "one trillion, three hundred nineteen billion, nine hundred ninety-eight million, nine hundred ninety-six thousand, eight hundred seventy-two".