20145411522 has 12 divisors (see below), whose sum is σ = 43648391670. Its totient is φ = 6715137168.

The previous prime is 20145411509. The next prime is 20145411563. The reversal of 20145411522 is 22511454102.

It is a happy number.

20145411522 is a `hidden beast` number, since 201 + 45 + 411 + 5 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13266202041 + 6879209481 = 115179^2 + 82941^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559594747 + ... + 559594782.

Almost surely, 2^20145411522 is an apocalyptic number.

20145411522 is an abundant number, since it is smaller than the sum of its proper divisors (23502980148).

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

20145411522 is a wasteful number, since it uses less digits than its factorization.

20145411522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119189537 (or 1119189534 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 20145411522 its reverse (22511454102), we get a palindrome (42656865624).

The spelling of 20145411522 in words is "twenty billion, one hundred forty-five million, four hundred eleven thousand, five hundred twenty-two".