10020131440 has 40 divisors (see below), whose sum is σ = 25414699248. Its totient is φ = 3643683840.

The previous prime is 10020131413. The next prime is 10020131477. The reversal of 10020131440 is 4413102001.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 5692377 + ... + 5694136.

Almost surely, 2^10020131440 is an apocalyptic number.

10020131440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10020131440 is an abundant number, since it is smaller than the sum of its proper divisors (15394567808).

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

10020131440 is a wasteful number, since it uses less digits than its factorization.

10020131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11386537 (or 11386531 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10020131440 its reverse (4413102001), we get a palindrome (14433233441).

The spelling of 10020131440 in words is "ten billion, twenty million, one hundred thirty-one thousand, four hundred forty".