85056376778 has 8 divisors (see below), whose sum is σ = 131032796772. Its totient is φ = 41378777856.

The previous prime is 85056376687. The next prime is 85056376781. The reversal of 85056376778 is 87767365058.

It can be written as a sum of positive squares in 2 ways, for example, as 82934208289 + 2122168489 = 287983^2 + 46067^2 .

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

It is a super-3 number, since 3×85056376778³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85056376778.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574705175 + ... + 574705322.

Almost surely, 2^85056376778 is an apocalyptic number.

85056376778 is a deficient number, since it is larger than the sum of its proper divisors (45976419994).

85056376778 is a wasteful number, since it uses less digits than its factorization.

85056376778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149410536.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 85056376778 in words is "eighty-five billion, fifty-six million, three hundred seventy-six thousand, seven hundred seventy-eight".