20100344140 has 24 divisors (see below), whose sum is σ = 42788954880. Its totient is φ = 7929998208.

The previous prime is 20100344137. The next prime is 20100344149. The reversal of 20100344140 is 4144300102.

It is not an unprimeable number, because it can be changed into a prime (20100344149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6882220 + ... + 6885139.

It is an arithmetic number, because the mean of its divisors is an integer number (1782873120).

Almost surely, 2^20100344140 is an apocalyptic number.

20100344140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100344140 is an abundant number, since it is smaller than the sum of its proper divisors (22688610740).

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

20100344140 is a wasteful number, since it uses less digits than its factorization.

20100344140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13767441 (or 13767439 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20100344140 its reverse (4144300102), we get a palindrome (24244644242).

The spelling of 20100344140 in words is "twenty billion, one hundred million, three hundred forty-four thousand, one hundred forty".