85900656639 has 8 divisors (see below), whose sum is σ = 130896238720. Its totient is φ = 49086089496.

The previous prime is 85900656637. The next prime is 85900656689. The reversal of 85900656639 is 93665600958.

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

It is not a de Polignac number, because 85900656639 - 2¹ = 85900656637 is a prime.

It is a super-2 number, since 2×85900656639² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85900656637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2045253709 + ... + 2045253750.

It is an arithmetic number, because the mean of its divisors is an integer number (16362029840).

Almost surely, 2^85900656639 is an apocalyptic number.

85900656639 is a deficient number, since it is larger than the sum of its proper divisors (44995582081).

85900656639 is a wasteful number, since it uses less digits than its factorization.

85900656639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090507469.

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 85900656639 in words is "eighty-five billion, nine hundred million, six hundred fifty-six thousand, six hundred thirty-nine".