1312540002444 has 96 divisors (see below), whose sum is σ = 3488654131200. Its totient is φ = 380186452800.

The previous prime is 1312540002443. The next prime is 1312540002493. The reversal of 1312540002444 is 4442000452131.

It is a super-2 number, since 2×1312540002444² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312540002443) 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, 4319007 + ... + 4612905.

It is an arithmetic number, because the mean of its divisors is an integer number (36340147200).

Almost surely, 2^{1312540002444} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312540002444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744327065600).

1312540002444 is an abundant number, since it is smaller than the sum of its proper divisors (2176114128756).

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

1312540002444 is a wasteful number, since it uses less digits than its factorization.

1312540002444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295411 (or 295409 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1312540002444 its reverse (4442000452131), we get a palindrome (5754540454575).

The spelling of 1312540002444 in words is "one trillion, three hundred twelve billion, five hundred forty million, two thousand, four hundred forty-four".