85685058407640 has 128 divisors (see below), whose sum is σ = 257352879913920. Its totient is φ = 22822895616000.

The previous prime is 85685058407621. The next prime is 85685058407687. The reversal of 85685058407640 is 4670485058658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 611193232 + ... + 611333408.

Almost surely, 2^{85685058407640} is an apocalyptic number.

It is an amenable number.

85685058407640 is an abundant number, since it is smaller than the sum of its proper divisors (171667821506280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85685058407640 is a wasteful number, since it uses less digits than its factorization.

85685058407640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146053 (or 146049 counting only the distinct ones).

The product of its (nonzero) digits is 258048000, while the sum is 66.

The spelling of 85685058407640 in words is "eighty-five trillion, six hundred eighty-five billion, fifty-eight million, four hundred seven thousand, six hundred forty".