320787340511 has 8 divisors (see below), whose sum is σ = 354166089984. Its totient is φ = 288111301720.

The previous prime is 320787340501. The next prime is 320787340529. The reversal of 320787340511 is 115043787023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320787340511 - 2²² = 320783146207 is a prime.

It is a super-2 number, since 2×320787340511² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320787340501) 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, 175676711 + ... + 175678536.

It is an arithmetic number, because the mean of its divisors is an integer number (44270761248).

Almost surely, 2^320787340511 is an apocalyptic number.

320787340511 is a deficient number, since it is larger than the sum of its proper divisors (33378749473).

320787340511 is a wasteful number, since it uses less digits than its factorization.

320787340511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351355341.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 320787340511 in words is "three hundred twenty billion, seven hundred eighty-seven million, three hundred forty thousand, five hundred eleven".