20154452022 has 32 divisors (see below), whose sum is σ = 44800012800. Its totient is φ = 6716299464.

The previous prime is 20154451957. The next prime is 20154452023. The reversal of 20154452022 is 22025445102.

20154452022 is a `hidden beast` number, since 2 + 0 + 15 + 445 + 202 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154452023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153879 + ... + 252957.

It is an arithmetic number, because the mean of its divisors is an integer number (1400000400).

Almost surely, 2^20154452022 is an apocalyptic number.

20154452022 is an abundant number, since it is smaller than the sum of its proper divisors (24645560778).

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

20154452022 is a wasteful number, since it uses less digits than its factorization.

20154452022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102857 (or 102851 counting only the distinct ones).

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

Adding to 20154452022 its reverse (22025445102), we get a palindrome (42179897124).

The spelling of 20154452022 in words is "twenty billion, one hundred fifty-four million, four hundred fifty-two thousand, twenty-two".