85501140778 has 8 divisors (see below), whose sum is σ = 128336594400. Its totient is φ = 42722275980.

The previous prime is 85501140727. The next prime is 85501140821. The reversal of 85501140778 is 87704110558.

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

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, 14143428 + ... + 14149471.

It is an arithmetic number, because the mean of its divisors is an integer number (16042074300).

Almost surely, 2^85501140778 is an apocalyptic number.

85501140778 is a deficient number, since it is larger than the sum of its proper divisors (42835453622).

85501140778 is a wasteful number, since it uses less digits than its factorization.

85501140778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28294412.

The product of its (nonzero) digits is 313600, while the sum is 46.

The spelling of 85501140778 in words is "eighty-five billion, five hundred one million, one hundred forty thousand, seven hundred seventy-eight".