82575750778 has 16 divisors (see below), whose sum is σ = 128167171560. Its totient is φ = 39854080000.

The previous prime is 82575750773. The next prime is 82575750779. The reversal of 82575750778 is 87705757528.

It can be written as a sum of positive squares in 4 ways, for example, as 74323300129 + 8252450649 = 272623^2 + 90843^2 .

It is not an unprimeable number, because it can be changed into a prime (82575750773) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 54138 + ... + 409978.

Almost surely, 2^82575750778 is an apocalyptic number.

82575750778 is a deficient number, since it is larger than the sum of its proper divisors (45591420782).

82575750778 is a wasteful number, since it uses less digits than its factorization.

82575750778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359873.

The product of its (nonzero) digits is 38416000, while the sum is 61.

The spelling of 82575750778 in words is "eighty-two billion, five hundred seventy-five million, seven hundred fifty thousand, seven hundred seventy-eight".