20136884458238 has 16 divisors (see below), whose sum is σ = 30493242931200. Its totient is φ = 9972923917176.

The previous prime is 20136884458199. The next prime is 20136884458309. The reversal of 20136884458238 is 83285448863102.

It is a happy number.

It is a super-2 number, since 2×20136884458238² (a number of 27 digits) contains 22 as substring.

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, 113353370 + ... + 113530877.

It is an arithmetic number, because the mean of its divisors is an integer number (1905827683200).

Almost surely, 2^{20136884458238} is an apocalyptic number.

20136884458238 is a deficient number, since it is larger than the sum of its proper divisors (10356358472962).

20136884458238 is a wasteful number, since it uses less digits than its factorization.

20136884458238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226884671.

The product of its (nonzero) digits is 70778880, while the sum is 62.

The spelling of 20136884458238 in words is "twenty trillion, one hundred thirty-six billion, eight hundred eighty-four million, four hundred fifty-eight thousand, two hundred thirty-eight".