85776159640 has 16 divisors (see below), whose sum is σ = 192996359280. Its totient is φ = 34310463840.

The previous prime is 85776159629. The next prime is 85776159691. The reversal of 85776159640 is 4695167758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072201956 + ... + 1072202035.

It is an arithmetic number, because the mean of its divisors is an integer number (12062272455).

Almost surely, 2^85776159640 is an apocalyptic number.

It is an amenable number.

85776159640 is an abundant number, since it is smaller than the sum of its proper divisors (107220199640).

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

85776159640 is a wasteful number, since it uses less digits than its factorization.

85776159640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144404002 (or 2144403998 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 85776159640 in words is "eighty-five billion, seven hundred seventy-six million, one hundred fifty-nine thousand, six hundred forty".