1331429620640 has 48 divisors (see below), whose sum is σ = 3594859978752. Its totient is φ = 456490155264.

The previous prime is 1331429620637. The next prime is 1331429620649. The reversal of 1331429620640 is 460269241331.

It is not an unprimeable number, because it can be changed into a prime (1331429620649) 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, 594387104 + ... + 594389343.

It is an arithmetic number, because the mean of its divisors is an integer number (74892916224).

Almost surely, 2^{1331429620640} is an apocalyptic number.

1331429620640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331429620640 is an abundant number, since it is smaller than the sum of its proper divisors (2263430358112).

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

1331429620640 is a wasteful number, since it uses less digits than its factorization.

1331429620640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188776469 (or 1188776461 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 1331429620640 in words is "one trillion, three hundred thirty-one billion, four hundred twenty-nine million, six hundred twenty thousand, six hundred forty".