1331907898880 has 80 divisors (see below), whose sum is σ = 3439107945504. Its totient is φ = 491781365760.

The previous prime is 1331907898873. The next prime is 1331907898891. The reversal of 1331907898880 is 888987091331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19977356 + ... + 20043915.

Almost surely, 2^{1331907898880} is an apocalyptic number.

1331907898880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331907898880 is an abundant number, since it is smaller than the sum of its proper divisors (2107200046624).

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

1331907898880 is an equidigital number, since it uses as much as digits as its factorization.

1331907898880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40021307 (or 40021291 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 65.

The spelling of 1331907898880 in words is "one trillion, three hundred thirty-one billion, nine hundred seven million, eight hundred ninety-eight thousand, eight hundred eighty".