20110434140 has 24 divisors (see below), whose sum is σ = 42329915712. Its totient is φ = 8025506240.

The previous prime is 20110434131. The next prime is 20110434187. The reversal of 20110434140 is 4143401102.

It is a super-2 number, since 2×20110434140² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 1157879 + ... + 1175118.

It is an arithmetic number, because the mean of its divisors is an integer number (1763746488).

Almost surely, 2^20110434140 is an apocalyptic number.

20110434140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110434140 is an abundant number, since it is smaller than the sum of its proper divisors (22219481572).

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

20110434140 is a wasteful number, since it uses less digits than its factorization.

20110434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333437 (or 2333435 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20110434140 its reverse (4143401102), we get a palindrome (24253835242).

The spelling of 20110434140 in words is "twenty billion, one hundred ten million, four hundred thirty-four thousand, one hundred forty".