20013081150687 has 4 divisors (see below), whose sum is σ = 26684108200920. Its totient is φ = 13342054100456.

The previous prime is 20013081150677. The next prime is 20013081150707. The reversal of 20013081150687 is 78605118031002.

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

It is a cyclic number.

It is not a de Polignac number, because 20013081150687 - 2¹⁵ = 20013081117919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013081150677) 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, 3335513525112 + ... + 3335513525117.

It is an arithmetic number, because the mean of its divisors is an integer number (6671027050230).

Almost surely, 2^{20013081150687} is an apocalyptic number.

20013081150687 is a deficient number, since it is larger than the sum of its proper divisors (6671027050233).

20013081150687 is an equidigital number, since it uses as much as digits as its factorization.

20013081150687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671027050232.

The product of its (nonzero) digits is 80640, while the sum is 42.

Adding to 20013081150687 its reverse (78605118031002), we get a palindrome (98618199181689).

The spelling of 20013081150687 in words is "twenty trillion, thirteen billion, eighty-one million, one hundred fifty thousand, six hundred eighty-seven".