82451213452742 has 4 divisors (see below), whose sum is σ = 123676820179116. Its totient is φ = 41225606726370.

The previous prime is 82451213452733. The next prime is 82451213452757. The reversal of 82451213452742 is 24725431215428.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20612803363184 + ... + 20612803363187.

It is an arithmetic number, because the mean of its divisors is an integer number (30919205044779).

Almost surely, 2^{82451213452742} is an apocalyptic number.

82451213452742 is a deficient number, since it is larger than the sum of its proper divisors (41225606726374).

82451213452742 is a wasteful number, since it uses less digits than its factorization.

82451213452742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41225606726373.

The product of its digits is 4300800, while the sum is 50.

The spelling of 82451213452742 in words is "eighty-two trillion, four hundred fifty-one billion, two hundred thirteen million, four hundred fifty-two thousand, seven hundred forty-two".