20385866007 has 12 divisors (see below), whose sum is σ = 31711347304. Its totient is φ = 12545148240.

The previous prime is 20385866003. The next prime is 20385866041. The reversal of 20385866007 is 70066858302.

20385866007 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 586 + 60 + 0 + 7 = 666.

It is not a de Polignac number, because 20385866007 - 2² = 20385866003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385866003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87118969 + ... + 87119202.

Almost surely, 2^20385866007 is an apocalyptic number.

20385866007 is a deficient number, since it is larger than the sum of its proper divisors (11325481297).

20385866007 is a wasteful number, since it uses less digits than its factorization.

20385866007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174238190 (or 174238187 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 20385866007 in words is "twenty billion, three hundred eighty-five million, eight hundred sixty-six thousand, seven".