20154402522 has 12 divisors (see below), whose sum is σ = 43667872170. Its totient is φ = 6718134168.

The previous prime is 20154402511. The next prime is 20154402553. The reversal of 20154402522 is 22520445102.

20154402522 is a `hidden beast` number, since 201 + 5 + 4 + 402 + 52 + 2 = 666.

20154402522 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11045799801 + 9108602721 = 105099^2 + 95439^2 .

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, 559844497 + ... + 559844532.

Almost surely, 2^20154402522 is an apocalyptic number.

20154402522 is an abundant number, since it is smaller than the sum of its proper divisors (23513469648).

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

20154402522 is a wasteful number, since it uses less digits than its factorization.

20154402522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119689037 (or 1119689034 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 20154402522 its reverse (22520445102), we get a palindrome (42674847624).

The spelling of 20154402522 in words is "twenty billion, one hundred fifty-four million, four hundred two thousand, five hundred twenty-two".