85712767838 has 8 divisors (see below), whose sum is σ = 128738101680. Its totient is φ = 42800067280.

The previous prime is 85712767781. The next prime is 85712767853. The reversal of 85712767838 is 83876721758.

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, 28156418 + ... + 28159461.

It is an arithmetic number, because the mean of its divisors is an integer number (16092262710).

Almost surely, 2^85712767838 is an apocalyptic number.

85712767838 is a deficient number, since it is larger than the sum of its proper divisors (43025333842).

85712767838 is a wasteful number, since it uses less digits than its factorization.

85712767838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56316642.

The product of its digits is 31610880, while the sum is 62.

The spelling of 85712767838 in words is "eighty-five billion, seven hundred twelve million, seven hundred sixty-seven thousand, eight hundred thirty-eight".