2145520931319 has 32 divisors (see below), whose sum is σ = 3511850135040. Its totient is φ = 1287678370176.

The previous prime is 2145520931317. The next prime is 2145520931329. The reversal of 2145520931319 is 9131390255412.

2145520931319 is a `hidden beast` number, since 2 + 1 + 4 + 5 + 520 + 93 + 1 + 31 + 9 = 666.

It is not a de Polignac number, because 2145520931319 - 2¹ = 2145520931317 is a prime.

It is a super-2 number, since 2×2145520931319² (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 (2145520931317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101605477 + ... + 101626590.

It is an arithmetic number, because the mean of its divisors is an integer number (109745316720).

Almost surely, 2^{2145520931319} is an apocalyptic number.

2145520931319 is a deficient number, since it is larger than the sum of its proper divisors (1366329203721).

2145520931319 is a wasteful number, since it uses less digits than its factorization.

2145520931319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203232116 (or 203232110 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 2145520931319 in words is "two trillion, one hundred forty-five billion, five hundred twenty million, nine hundred thirty-one thousand, three hundred nineteen".