80858780091 has 32 divisors (see below), whose sum is σ = 121259073600. Its totient is φ = 53246350080.

The previous prime is 80858780083. The next prime is 80858780137. The reversal of 80858780091 is 19008785808.

It is not a de Polignac number, because 80858780091 - 2³ = 80858780083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80858740091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2436985 + ... + 2469941.

It is an arithmetic number, because the mean of its divisors is an integer number (3789346050).

Almost surely, 2^80858780091 is an apocalyptic number.

80858780091 is a deficient number, since it is larger than the sum of its proper divisors (40400293509).

80858780091 is a wasteful number, since it uses less digits than its factorization.

80858780091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34076 (or 34070 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 54.

The spelling of 80858780091 in words is "eighty billion, eight hundred fifty-eight million, seven hundred eighty thousand, ninety-one".