20145323514522 has 32 divisors (see below), whose sum is σ = 43297411747392. Its totient is φ = 6225771619584.

The previous prime is 20145323514509. The next prime is 20145323514551. The reversal of 20145323514522 is 22541532354102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473897433 + ... + 1473911100.

It is an arithmetic number, because the mean of its divisors is an integer number (1353044117106).

Almost surely, 2^{20145323514522} is an apocalyptic number.

20145323514522 is an abundant number, since it is smaller than the sum of its proper divisors (23152088232870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20145323514522 is a wasteful number, since it uses less digits than its factorization.

20145323514522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947808622.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 20145323514522 its reverse (22541532354102), we get a palindrome (42686855868624).

The spelling of 20145323514522 in words is "twenty trillion, one hundred forty-five billion, three hundred twenty-three million, five hundred fourteen thousand, five hundred twenty-two".