82775580778 has 16 divisors (see below), whose sum is σ = 135579866400. Its totient is φ = 37589454000.

The previous prime is 82775580757. The next prime is 82775580799. The reversal of 82775580778 is 87708557728.

It is an interprime number because it is at equal distance from previous prime (82775580757) and next prime (82775580799).

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 7 ways as a sum of consecutive naturals, for example, 1766853 + ... + 1813096.

It is an arithmetic number, because the mean of its divisors is an integer number (8473741650).

Almost surely, 2^82775580778 is an apocalyptic number.

82775580778 is a deficient number, since it is larger than the sum of its proper divisors (52804285622).

82775580778 is a wasteful number, since it uses less digits than its factorization.

82775580778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581013.

The product of its (nonzero) digits is 61465600, while the sum is 64.

The spelling of 82775580778 in words is "eighty-two billion, seven hundred seventy-five million, five hundred eighty thousand, seven hundred seventy-eight".