20145522315 has 8 divisors (see below), whose sum is σ = 32232835728. Its totient is φ = 10744278560.

The previous prime is 20145522169. The next prime is 20145522343. The reversal of 20145522315 is 51322554102.

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

It is not a de Polignac number, because 20145522315 - 2¹¹ = 20145520267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671517396 + ... + 671517425.

It is an arithmetic number, because the mean of its divisors is an integer number (4029104466).

Almost surely, 2^20145522315 is an apocalyptic number.

20145522315 is a deficient number, since it is larger than the sum of its proper divisors (12087313413).

20145522315 is a wasteful number, since it uses less digits than its factorization.

20145522315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343034829.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 20145522315 in words is "twenty billion, one hundred forty-five million, five hundred twenty-two thousand, three hundred fifteen".