1312797644928 has 288 divisors, whose sum is σ = 4793981839920. Its totient is φ = 340986240000.

The previous prime is 1312797644911. The next prime is 1312797644933. The reversal of 1312797644928 is 8294467972131.

1312797644928 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 79 + 76 + 4 + 492 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 436198 + ... + 1678053.

Almost surely, 2^{1312797644928} is an apocalyptic number.

1312797644928 is a gapful number since it is divisible by the number (18) 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 1312797644928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2396990919960).

1312797644928 is an abundant number, since it is smaller than the sum of its proper divisors (3481184194992).

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

1312797644928 is a wasteful number, since it uses less digits than its factorization.

1312797644928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114296 (or 2114274 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 1312797644928 in words is "one trillion, three hundred twelve billion, seven hundred ninety-seven million, six hundred forty-four thousand, nine hundred twenty-eight".