32643663745 has 24 divisors (see below), whose sum is σ = 49208306112. Its totient is φ = 20349294240.

The previous prime is 32643663737. The next prime is 32643663799. The reversal of 32643663745 is 54736634623.

It is not a de Polignac number, because 32643663745 - 2³ = 32643663737 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3849799 + ... + 3858268.

It is an arithmetic number, because the mean of its divisors is an integer number (2050346088).

Almost surely, 2^32643663745 is an apocalyptic number.

32643663745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

32643663745 is a deficient number, since it is larger than the sum of its proper divisors (16564642367).

32643663745 is a wasteful number, since it uses less digits than its factorization.

32643663745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7708101 (or 7708090 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 49.

The spelling of 32643663745 in words is "thirty-two billion, six hundred forty-three million, six hundred sixty-three thousand, seven hundred forty-five".