20412827807 has 4 divisors (see below), whose sum is σ = 20700332496. Its totient is φ = 20125323120.

The previous prime is 20412827801. The next prime is 20412827837. The reversal of 20412827807 is 70872821402.

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 20412827807 - 2⁸ = 20412827551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412827801) 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, 143752238 + ... + 143752379.

It is an arithmetic number, because the mean of its divisors is an integer number (5175083124).

Almost surely, 2^20412827807 is an apocalyptic number.

20412827807 is a deficient number, since it is larger than the sum of its proper divisors (287504689).

20412827807 is an equidigital number, since it uses as much as digits as its factorization.

20412827807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287504688.

The product of its (nonzero) digits is 100352, while the sum is 41.

The spelling of 20412827807 in words is "twenty billion, four hundred twelve million, eight hundred twenty-seven thousand, eight hundred seven".