1312987288443 has 32 divisors (see below), whose sum is σ = 1872407057472. Its totient is φ = 815493120000.

The previous prime is 1312987288439. The next prime is 1312987288517. The reversal of 1312987288443 is 3448827892131.

It is not a de Polignac number, because 1312987288443 - 2² = 1312987288439 is a prime.

It is a super-2 number, since 2×1312987288443² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312987288843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24703405 + ... + 24756497.

It is an arithmetic number, because the mean of its divisors is an integer number (58512720546).

Almost surely, 2^{1312987288443} is an apocalyptic number.

1312987288443 is a deficient number, since it is larger than the sum of its proper divisors (559419769029).

1312987288443 is a wasteful number, since it uses less digits than its factorization.

1312987288443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58015.

The product of its digits is 18579456, while the sum is 60.

The spelling of 1312987288443 in words is "one trillion, three hundred twelve billion, nine hundred eighty-seven million, two hundred eighty-eight thousand, four hundred forty-three".