20334131440 has 80 divisors (see below), whose sum is σ = 55491037632. Its totient is φ = 6783270912.

The previous prime is 20334131431. The next prime is 20334131449. The reversal of 20334131440 is 4413143302.

It is an interprime number because it is at equal distance from previous prime (20334131431) and next prime (20334131449).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334131449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469969 + ... + 511408.

Almost surely, 2^20334131440 is an apocalyptic number.

20334131440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20334131440 is an abundant number, since it is smaller than the sum of its proper divisors (35156906192).

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

20334131440 is a wasteful number, since it uses less digits than its factorization.

20334131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981434 (or 981428 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20334131440 its reverse (4413143302), we get a palindrome (24747274742).

The spelling of 20334131440 in words is "twenty billion, three hundred thirty-four million, one hundred thirty-one thousand, four hundred forty".