85699756494 has 96 divisors (see below), whose sum is σ = 209209448448. Its totient is φ = 25118424000.

The previous prime is 85699756489. The next prime is 85699756511. The reversal of 85699756494 is 49465799658.

85699756494 is a `hidden beast` number, since 8 + 5 + 69 + 9 + 75 + 6 + 494 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21732687 + ... + 21736629.

It is an arithmetic number, because the mean of its divisors is an integer number (2179265088).

Almost surely, 2^85699756494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85699756494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104604724224).

85699756494 is an abundant number, since it is smaller than the sum of its proper divisors (123509691954).

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

85699756494 is a wasteful number, since it uses less digits than its factorization.

85699756494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7534 (or 7531 counting only the distinct ones).

The product of its digits is 587865600, while the sum is 72.

The spelling of 85699756494 in words is "eighty-five billion, six hundred ninety-nine million, seven hundred fifty-six thousand, four hundred ninety-four".