1312632646740 has 144 divisors (see below), whose sum is σ = 4120483086720. Its totient is φ = 337974923520.

The previous prime is 1312632646691. The next prime is 1312632646757. The reversal of 1312632646740 is 476462362131.

1312632646740 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 632 + 6 + 4 + 6 + 7 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120201 + ... + 1624719.

It is an arithmetic number, because the mean of its divisors is an integer number (28614465880).

Almost surely, 2^{1312632646740} is an apocalyptic number.

1312632646740 is a gapful number since it is divisible by the number (10) 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 1312632646740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2060241543360).

1312632646740 is an abundant number, since it is smaller than the sum of its proper divisors (2807850439980).

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

1312632646740 is a wasteful number, since it uses less digits than its factorization.

1312632646740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504702 (or 1504697 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 1312632646740 in words is "one trillion, three hundred twelve billion, six hundred thirty-two million, six hundred forty-six thousand, seven hundred forty".