1320217607919 has 32 divisors (see below), whose sum is σ = 2048531627520. Its totient is φ = 740745556992.

The previous prime is 1320217607833. The next prime is 1320217607941. The reversal of 1320217607919 is 9197067120231.

It is not a de Polignac number, because 1320217607919 - 2⁷ = 1320217607791 is a prime.

It is a super-2 number, since 2×1320217607919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320217207919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2345854 + ... + 2853675.

It is an arithmetic number, because the mean of its divisors is an integer number (64016613360).

Almost surely, 2^{1320217607919} is an apocalyptic number.

1320217607919 is a deficient number, since it is larger than the sum of its proper divisors (728314019601).

1320217607919 is a wasteful number, since it uses less digits than its factorization.

1320217607919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199759.

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 1320217607919 in words is "one trillion, three hundred twenty billion, two hundred seventeen million, six hundred seven thousand, nine hundred nineteen".