85623505668 has 72 divisors (see below), whose sum is σ = 239132694528. Its totient is φ = 25694347008.

The previous prime is 85623505621. The next prime is 85623505673. The reversal of 85623505668 is 86650532658.

85623505668 is a `hidden beast` number, since 8 + 5 + 6 + 23 + 50 + 566 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3027396 + ... + 3055547.

It is an arithmetic number, because the mean of its divisors is an integer number (3321287424).

Almost surely, 2^85623505668 is an apocalyptic number.

It is an amenable number.

85623505668 is an abundant number, since it is smaller than the sum of its proper divisors (153509188860).

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

85623505668 is a wasteful number, since it uses less digits than its factorization.

85623505668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082993 (or 6082988 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 85623505668 in words is "eighty-five billion, six hundred twenty-three million, five hundred five thousand, six hundred sixty-eight".