20686037411087 has 4 divisors (see below), whose sum is σ = 20689088005896. Its totient is φ = 20682986816280.

The previous prime is 20686037411069. The next prime is 20686037411099. The reversal of 20686037411087 is 78011473068602.

It is a happy number.

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 20686037411087 - 2¹⁴ = 20686037394703 is a prime.

It is a super-3 number, since 3×20686037411087³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20686037471087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525287233 + ... + 1525300794.

It is an arithmetic number, because the mean of its divisors is an integer number (5172272001474).

Almost surely, 2^{20686037411087} is an apocalyptic number.

20686037411087 is a deficient number, since it is larger than the sum of its proper divisors (3050594809).

20686037411087 is an equidigital number, since it uses as much as digits as its factorization.

20686037411087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050594808.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 20686037411087 in words is "twenty trillion, six hundred eighty-six billion, thirty-seven million, four hundred eleven thousand, eighty-seven".