1296875831832 has 128 divisors (see below), whose sum is σ = 4333753920000. Its totient is φ = 351034051968.

The previous prime is 1296875831831. The next prime is 1296875831947. The reversal of 1296875831832 is 2381385786921.

1296875831832 is a `hidden beast` number, since 1 + 2 + 9 + 6 + 8 + 7 + 583 + 18 + 32 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1296875831832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296875831831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22542907 + ... + 22600362.

It is an arithmetic number, because the mean of its divisors is an integer number (33857452500).

Almost surely, 2^{1296875831832} is an apocalyptic number.

1296875831832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1296875831832 is an abundant number, since it is smaller than the sum of its proper divisors (3036878088168).

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

1296875831832 is a wasteful number, since it uses less digits than its factorization.

1296875831832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45143310 (or 45143300 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 1296875831832 in words is "one trillion, two hundred ninety-six billion, eight hundred seventy-five million, eight hundred thirty-one thousand, eight hundred thirty-two".