20027691875 has 10 divisors (see below), whose sum is σ = 25026604548. Its totient is φ = 16022153000.

The previous prime is 20027691869. The next prime is 20027691877. The reversal of 20027691875 is 57819672002.

It is a happy number.

It is not a de Polignac number, because 20027691875 - 2¹⁴ = 20027675491 is a prime.

It is a super-2 number, since 2×20027691875² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20027691877) 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 9 ways as a sum of consecutive naturals, for example, 16021529 + ... + 16022778.

Almost surely, 2^20027691875 is an apocalyptic number.

20027691875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20027691875 is a deficient number, since it is larger than the sum of its proper divisors (4998912673).

20027691875 is an frugal number, since it uses more digits than its factorization.

20027691875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32044327 (or 32044312 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 20027691875 in words is "twenty billion, twenty-seven million, six hundred ninety-one thousand, eight hundred seventy-five".