80995523091 has 24 divisors (see below), whose sum is σ = 125664272064. Its totient is φ = 46268948880.

The previous prime is 80995523057. The next prime is 80995523107. The reversal of 80995523091 is 19032559908.

It is not a de Polignac number, because 80995523091 - 2²¹ = 80993425939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80995523051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405576 + ... + 571386.

It is an arithmetic number, because the mean of its divisors is an integer number (5236011336).

Almost surely, 2^80995523091 is an apocalyptic number.

80995523091 is a deficient number, since it is larger than the sum of its proper divisors (44668748973).

80995523091 is a wasteful number, since it uses less digits than its factorization.

80995523091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169151 (or 169144 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 80995523091 in words is "eighty billion, nine hundred ninety-five million, five hundred twenty-three thousand, ninety-one".