82142747905 has 8 divisors (see below), whose sum is σ = 98577346752. Its totient is φ = 65710165488.

The previous prime is 82142747903. The next prime is 82142747917. The reversal of 82142747905 is 50974724128.

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 82142747905 - 2¹ = 82142747903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82142747903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412987 + ... + 578656.

It is an arithmetic number, because the mean of its divisors is an integer number (12322168344).

Almost surely, 2^82142747905 is an apocalyptic number.

It is an amenable number.

82142747905 is a deficient number, since it is larger than the sum of its proper divisors (16434598847).

82142747905 is a wasteful number, since it uses less digits than its factorization.

82142747905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008215.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 82142747905 in words is "eighty-two billion, one hundred forty-two million, seven hundred forty-seven thousand, nine hundred five".