82050077854 has 4 divisors (see below), whose sum is σ = 123075116784. Its totient is φ = 41025038926.

The previous prime is 82050077819. The next prime is 82050077867. The reversal of 82050077854 is 45877005028.

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

It is a super-2 number, since 2×82050077854² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20512519462 + ... + 20512519465.

It is an arithmetic number, because the mean of its divisors is an integer number (30768779196).

Almost surely, 2^82050077854 is an apocalyptic number.

82050077854 is a deficient number, since it is larger than the sum of its proper divisors (41025038930).

82050077854 is a wasteful number, since it uses less digits than its factorization.

82050077854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41025038929.

The product of its (nonzero) digits is 627200, while the sum is 46.

The spelling of 82050077854 in words is "eighty-two billion, fifty million, seventy-seven thousand, eight hundred fifty-four".