20486886887 has 8 divisors (see below), whose sum is σ = 20513921856. Its totient is φ = 20459872512.

The previous prime is 20486886883. The next prime is 20486886911. The reversal of 20486886887 is 78868868402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20486886887 - 2² = 20486886883 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 (20486886883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3037583 + ... + 3044319.

It is an arithmetic number, because the mean of its divisors is an integer number (2564240232).

Almost surely, 2^20486886887 is an apocalyptic number.

20486886887 is a deficient number, since it is larger than the sum of its proper divisors (27034969).

20486886887 is a wasteful number, since it uses less digits than its factorization.

20486886887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10297.

The product of its (nonzero) digits is 66060288, while the sum is 65.

The spelling of 20486886887 in words is "twenty billion, four hundred eighty-six million, eight hundred eighty-six thousand, eight hundred eighty-seven".