20676570887 has 64 divisors (see below), whose sum is σ = 26867635200. Its totient is φ = 15510942720.

The previous prime is 20676570821. The next prime is 20676570907. The reversal of 20676570887 is 78807567602.

It is a happy number.

It is not a de Polignac number, because 20676570887 - 2¹⁰ = 20676569863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20676570587) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8380028 + ... + 8382494.

It is an arithmetic number, because the mean of its divisors is an integer number (419806800).

Almost surely, 2^20676570887 is an apocalyptic number.

20676570887 is a deficient number, since it is larger than the sum of its proper divisors (6191064313).

20676570887 is a wasteful number, since it uses less digits than its factorization.

20676570887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616.

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 20676570887 in words is "twenty billion, six hundred seventy-six million, five hundred seventy thousand, eight hundred eighty-seven".