320515540140139 has 4 divisors (see below), whose sum is σ = 320515722958840. Its totient is φ = 320515357321440.

The previous prime is 320515540140121. The next prime is 320515540140179. The reversal of 320515540140139 is 931041045515023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320515540140139 is a prime.

It is a super-3 number, since 3×320515540140139³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320515540140095 and 320515540140104.

It is not an unprimeable number, because it can be changed into a prime (320515540140179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88753854 + ... + 92294515.

It is an arithmetic number, because the mean of its divisors is an integer number (80128930739710).

Almost surely, 2^{320515540140139} is an apocalyptic number.

320515540140139 is a deficient number, since it is larger than the sum of its proper divisors (182818701).

320515540140139 is a wasteful number, since it uses less digits than its factorization.

320515540140139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182818700.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 320515540140139 in words is "three hundred twenty trillion, five hundred fifteen billion, five hundred forty million, one hundred forty thousand, one hundred thirty-nine".