1331043640000 has 70 divisors (see below), whose sum is σ = 3300555737204. Its totient is φ = 532417440000.

The previous prime is 1331043639973. The next prime is 1331043640027. The reversal of 1331043640000 is 463401331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1331043639973) and next prime (1331043640027).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16598046 + ... + 16678045.

Almost surely, 2^{1331043640000} is an apocalyptic number.

1331043640000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331043640000 is an abundant number, since it is smaller than the sum of its proper divisors (1969512097204).

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

1331043640000 is an frugal number, since it uses more digits than its factorization.

1331043640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33276123 (or 33276098 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The spelling of 1331043640000 in words is "one trillion, three hundred thirty-one billion, forty-three million, six hundred forty thousand".