82724475745 has 8 divisors (see below), whose sum is σ = 101142378216. Its totient is φ = 64930909056.

The previous prime is 82724475733. The next prime is 82724475793. The reversal of 82724475745 is 54757442728.

It can be written as a sum of positive squares in 4 ways, for example, as 43962347584 + 38762128161 = 209672^2 + 196881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82724475745 - 2⁹ = 82724475233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156083652 + ... + 156084181.

It is an arithmetic number, because the mean of its divisors is an integer number (12642797277).

Almost surely, 2^82724475745 is an apocalyptic number.

It is an amenable number.

82724475745 is a deficient number, since it is larger than the sum of its proper divisors (18417902471).

82724475745 is a wasteful number, since it uses less digits than its factorization.

82724475745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312167891.

The product of its digits is 17561600, while the sum is 55.

The spelling of 82724475745 in words is "eighty-two billion, seven hundred twenty-four million, four hundred seventy-five thousand, seven hundred forty-five".