32001999973 has 2 divisors, whose sum is σ = 32001999974. Its totient is φ = 32001999972.

The previous prime is 32001999971. The next prime is 32002000033. The reversal of 32001999973 is 37999910023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30650555329 + 1351444644 = 175073^2 + 36762^2 .

It is a cyclic number.

It is not a de Polignac number, because 32001999973 - 2¹ = 32001999971 is a prime.

Together with 32001999971, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 32001999973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32001999971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16000999986 + 16000999987.

It is an arithmetic number, because the mean of its divisors is an integer number (16000999987).

Almost surely, 2^32001999973 is an apocalyptic number.

It is an amenable number.

32001999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

32001999973 is an equidigital number, since it uses as much as digits as its factorization.

32001999973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 826686, while the sum is 52.

The spelling of 32001999973 in words is "thirty-two billion, one million, nine hundred ninety-nine thousand, nine hundred seventy-three".