1231448315664 has 80 divisors (see below), whose sum is σ = 3635912683520. Its totient is φ = 351822234240.

The previous prime is 1231448315659. The next prime is 1231448315683. The reversal of 1231448315664 is 4665138441321.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 6366327 + ... + 6556905.

It is an arithmetic number, because the mean of its divisors is an integer number (45448908544).

Almost surely, 2^{1231448315664} is an apocalyptic number.

1231448315664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1231448315664 is an abundant number, since it is smaller than the sum of its proper divisors (2404464367856).

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

1231448315664 is a wasteful number, since it uses less digits than its factorization.

1231448315664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209828 (or 209822 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The spelling of 1231448315664 in words is "one trillion, two hundred thirty-one billion, four hundred forty-eight million, three hundred fifteen thousand, six hundred sixty-four".