20354043144 has 32 divisors (see below), whose sum is σ = 51601803840. Its totient is φ = 6689121600.

The previous prime is 20354043071. The next prime is 20354043181. The reversal of 20354043144 is 44134045302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5970727 + ... + 5974134.

It is an arithmetic number, because the mean of its divisors is an integer number (1612556370).

Almost surely, 2^20354043144 is an apocalyptic number.

20354043144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20354043144 is an abundant number, since it is smaller than the sum of its proper divisors (31247760696).

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

20354043144 is a wasteful number, since it uses less digits than its factorization.

20354043144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11944941 (or 11944937 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20354043144 its reverse (44134045302), we get a palindrome (64488088446).

The spelling of 20354043144 in words is "twenty billion, three hundred fifty-four million, forty-three thousand, one hundred forty-four".