20130639242420 has 48 divisors (see below), whose sum is σ = 48856382910720. Its totient is φ = 6824383636224.

The previous prime is 20130639242387. The next prime is 20130639242443. The reversal of 20130639242420 is 2424293603102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807798104 + ... + 807823023.

It is an arithmetic number, because the mean of its divisors is an integer number (1017841310640).

Almost surely, 2^{20130639242420} is an apocalyptic number.

20130639242420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130639242420 is an abundant number, since it is smaller than the sum of its proper divisors (28725743668300).

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

20130639242420 is a wasteful number, since it uses less digits than its factorization.

20130639242420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615621232 (or 1615621230 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 20130639242420 in words is "twenty trillion, one hundred thirty billion, six hundred thirty-nine million, two hundred forty-two thousand, four hundred twenty".