85727191478 has 8 divisors (see below), whose sum is σ = 128854835472. Its totient is φ = 42775579656.

The previous prime is 85727191447. The next prime is 85727191483. The reversal of 85727191478 is 87419172758.

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

It is a congruent number.

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, 44006825 + ... + 44008772.

It is an arithmetic number, because the mean of its divisors is an integer number (16106854434).

Almost surely, 2^85727191478 is an apocalyptic number.

85727191478 is a deficient number, since it is larger than the sum of its proper divisors (43127643994).

85727191478 is a wasteful number, since it uses less digits than its factorization.

85727191478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88016086.

The product of its digits is 7902720, while the sum is 59.

The spelling of 85727191478 in words is "eighty-five billion, seven hundred twenty-seven million, one hundred ninety-one thousand, four hundred seventy-eight".