20154254320 has 20 divisors (see below), whose sum is σ = 46858641480. Its totient is φ = 8061701696.

The previous prime is 20154254299. The next prime is 20154254377. The reversal of 20154254320 is 2345245102.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125964010 + ... + 125964169.

It is an arithmetic number, because the mean of its divisors is an integer number (2342932074).

Almost surely, 2^20154254320 is an apocalyptic number.

20154254320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20154254320 is an abundant number, since it is smaller than the sum of its proper divisors (26704387160).

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

20154254320 is a wasteful number, since it uses less digits than its factorization.

20154254320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251928192 (or 251928186 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20154254320 its reverse (2345245102), we get a palindrome (22499499422).

The spelling of 20154254320 in words is "twenty billion, one hundred fifty-four million, two hundred fifty-four thousand, three hundred twenty".