1312992987648 has 160 divisors (see below), whose sum is σ = 3515537241216. Its totient is φ = 435462094848.

The previous prime is 1312992987623. The next prime is 1312992987673. The reversal of 1312992987648 is 8467892992131.

It is an interprime number because it is at equal distance from previous prime (1312992987623) and next prime (1312992987673).

It is a super-2 number, since 2×1312992987648² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327182890 + ... + 327186902.

Almost surely, 2^{1312992987648} 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 1312992987648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1757768620608).

1312992987648 is an abundant number, since it is smaller than the sum of its proper divisors (2202544253568).

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

1312992987648 is an equidigital number, since it uses as much as digits as its factorization.

1312992987648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5054 (or 5038 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 69.

The spelling of 1312992987648 in words is "one trillion, three hundred twelve billion, nine hundred ninety-two million, nine hundred eighty-seven thousand, six hundred forty-eight".