1293438447312 has 40 divisors (see below), whose sum is σ = 3645144716640. Its totient is φ = 391951044480.

The previous prime is 1293438447283. The next prime is 1293438447319. The reversal of 1293438447312 is 2137448343921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293438447319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1224846487 + ... + 1224847542.

It is an arithmetic number, because the mean of its divisors is an integer number (91128617916).

Almost surely, 2^{1293438447312} is an apocalyptic number.

1293438447312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1293438447312 is an abundant number, since it is smaller than the sum of its proper divisors (2351706269328).

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

1293438447312 is a wasteful number, since it uses less digits than its factorization.

1293438447312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449694051 (or 2449694045 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The spelling of 1293438447312 in words is "one trillion, two hundred ninety-three billion, four hundred thirty-eight million, four hundred forty-seven thousand, three hundred twelve".