32644749649 has 2 divisors, whose sum is σ = 32644749650. Its totient is φ = 32644749648.

The previous prime is 32644749617. The next prime is 32644749653. The reversal of 32644749649 is 94694744623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26225535249 + 6419214400 = 161943^2 + 80120^2 .

It is a cyclic number.

It is not a de Polignac number, because 32644749649 - 2⁵ = 32644749617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32644749593 and 32644749602.

It is not a weakly prime, because it can be changed into another prime (32644749679) 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 as a sum of consecutive naturals, namely, 16322374824 + 16322374825.

It is an arithmetic number, because the mean of its divisors is an integer number (16322374825).

Almost surely, 2^32644749649 is an apocalyptic number.

It is an amenable number.

32644749649 is a deficient number, since it is larger than the sum of its proper divisors (1).

32644749649 is an equidigital number, since it uses as much as digits as its factorization.

32644749649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 58.

The spelling of 32644749649 in words is "thirty-two billion, six hundred forty-four million, seven hundred forty-nine thousand, six hundred forty-nine".