20144402154 has 24 divisors (see below), whose sum is σ = 44260942752. Its totient is φ = 6620225640.

The previous prime is 20144402141. The next prime is 20144402183. The reversal of 20144402154 is 45120444102.

20144402154 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 440 + 215 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7879944 + ... + 7882499.

It is an arithmetic number, because the mean of its divisors is an integer number (1844205948).

Almost surely, 2^20144402154 is an apocalyptic number.

20144402154 is an abundant number, since it is smaller than the sum of its proper divisors (24116540598).

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

20144402154 is a wasteful number, since it uses less digits than its factorization.

20144402154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15762522 (or 15762519 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 20144402154 its reverse (45120444102), we get a palindrome (65264846256).

The spelling of 20144402154 in words is "twenty billion, one hundred forty-four million, four hundred two thousand, one hundred fifty-four".