85256510634658 has 8 divisors (see below), whose sum is σ = 139510653765840. Its totient is φ = 38752959379380.

The previous prime is 85256510634599. The next prime is 85256510634667. The reversal of 85256510634658 is 85643601565258.

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

It is a self number, because there is not a number n which added to its sum of digits gives 85256510634658.

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, 1937647968948 + ... + 1937647968991.

It is an arithmetic number, because the mean of its divisors is an integer number (17438831720730).

Almost surely, 2^{85256510634658} is an apocalyptic number.

85256510634658 is a deficient number, since it is larger than the sum of its proper divisors (54254143131182).

85256510634658 is a wasteful number, since it uses less digits than its factorization.

85256510634658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875295937952.

The product of its (nonzero) digits is 207360000, while the sum is 64.

The spelling of 85256510634658 in words is "eighty-five trillion, two hundred fifty-six billion, five hundred ten million, six hundred thirty-four thousand, six hundred fifty-eight".