20678486875 has 20 divisors (see below), whose sum is σ = 25849675456. Its totient is φ = 16536492000.

The previous prime is 20678486863. The next prime is 20678486879. The reversal of 20678486875 is 57868487602.

It is not a de Polignac number, because 20678486875 - 2⁷ = 20678486747 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20678486879) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2328694 + ... + 2337556.

Almost surely, 2^20678486875 is an apocalyptic number.

20678486875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20678486875 is a deficient number, since it is larger than the sum of its proper divisors (5171188581).

20678486875 is an frugal number, since it uses more digits than its factorization.

20678486875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12616 (or 12601 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 20678486875 in words is "twenty billion, six hundred seventy-eight million, four hundred eighty-six thousand, eight hundred seventy-five".