20001332085 has 32 divisors (see below), whose sum is σ = 36763403520. Its totient is φ = 9096081408.

The previous prime is 20001332077. The next prime is 20001332089. The reversal of 20001332085 is 58023310002.

It is not a de Polignac number, because 20001332085 - 2³ = 20001332077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001332089) 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, 473230 + ... + 513759.

It is an arithmetic number, because the mean of its divisors is an integer number (1148856360).

Almost surely, 2^20001332085 is an apocalyptic number.

It is an amenable number.

20001332085 is a deficient number, since it is larger than the sum of its proper divisors (16762071435).

20001332085 is a wasteful number, since it uses less digits than its factorization.

20001332085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987197.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20001332085 its reverse (58023310002), we get a palindrome (78024642087).

The spelling of 20001332085 in words is "twenty billion, one million, three hundred thirty-two thousand, eighty-five".