85708011640 has 16 divisors (see below), whose sum is σ = 192843026280. Its totient is φ = 34283204640.

The previous prime is 85708011589. The next prime is 85708011667. The reversal of 85708011640 is 4611080758.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 2142700291 = 85708011640 / (8 + 5 + 7 + 0 + 8 + 0 + 1 + 1 + 6 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 85708011593 and 85708011602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071350106 + ... + 1071350185.

Almost surely, 2^85708011640 is an apocalyptic number.

It is an amenable number.

85708011640 is an abundant number, since it is smaller than the sum of its proper divisors (107135014640).

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

85708011640 is a wasteful number, since it uses less digits than its factorization.

85708011640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142700302 (or 2142700298 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 85708011640 in words is "eighty-five billion, seven hundred eight million, eleven thousand, six hundred forty".