82779762194 has 8 divisors (see below), whose sum is σ = 124652794428. Its totient is φ = 41228830720.

The previous prime is 82779762113. The next prime is 82779762257. The reversal of 82779762194 is 49126797728.

It can be written as a sum of positive squares in 2 ways, for example, as 82320217225 + 459544969 = 286915^2 + 21437^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 80524547 + ... + 80525574.

Almost surely, 2^82779762194 is an apocalyptic number.

82779762194 is a deficient number, since it is larger than the sum of its proper divisors (41873032234).

82779762194 is a wasteful number, since it uses less digits than its factorization.

82779762194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161050380.

The product of its digits is 21337344, while the sum is 62.

The spelling of 82779762194 in words is "eighty-two billion, seven hundred seventy-nine million, seven hundred sixty-two thousand, one hundred ninety-four".