20130639242401 has 4 divisors (see below), whose sum is σ = 21314794491972. Its totient is φ = 18946483992832.

The previous prime is 20130639242387. The next prime is 20130639242443. The reversal of 20130639242401 is 10424293603102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8445556703376 + 11685082539025 = 2906124^2 + 3418345^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130639242401 - 2¹⁷ = 20130639111329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130639240401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592077624760 + ... + 592077624793.

It is an arithmetic number, because the mean of its divisors is an integer number (5328698622993).

Almost surely, 2^{20130639242401} is an apocalyptic number.

It is an amenable number.

20130639242401 is a deficient number, since it is larger than the sum of its proper divisors (1184155249571).

20130639242401 is a wasteful number, since it uses less digits than its factorization.

20130639242401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184155249570.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 20130639242401 in words is "twenty trillion, one hundred thirty billion, six hundred thirty-nine million, two hundred forty-two thousand, four hundred one".