20073867585 has 32 divisors (see below), whose sum is σ = 32340477312. Its totient is φ = 10632168960.

The previous prime is 20073867581. The next prime is 20073867587. The reversal of 20073867585 is 58576837002.

It is not a de Polignac number, because 20073867585 - 2² = 20073867581 is a prime.

It is a super-2 number, since 2×20073867585² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20073867581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1681357 + ... + 1693253.

It is an arithmetic number, because the mean of its divisors is an integer number (1010639916).

Almost surely, 2^20073867585 is an apocalyptic number.

It is an amenable number.

20073867585 is a deficient number, since it is larger than the sum of its proper divisors (12266609727).

20073867585 is a wasteful number, since it uses less digits than its factorization.

20073867585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12673.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 20073867585 in words is "twenty billion, seventy-three million, eight hundred sixty-seven thousand, five hundred eighty-five".