92782257991 has 4 divisors (see below), whose sum is σ = 96816269232. Its totient is φ = 88748246752.

The previous prime is 92782257923. The next prime is 92782258039. The reversal of 92782257991 is 19975228729.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19975228729 = 43 ⋅464540203.

It is not a de Polignac number, because 92782257991 - 2⁷ = 92782257863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92782237991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2017005586 + ... + 2017005631.

It is an arithmetic number, because the mean of its divisors is an integer number (24204067308).

Almost surely, 2^92782257991 is an apocalyptic number.

92782257991 is a deficient number, since it is larger than the sum of its proper divisors (4034011241).

92782257991 is a wasteful number, since it uses less digits than its factorization.

92782257991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034011240.

The product of its digits is 11430720, while the sum is 61.

The spelling of 92782257991 in words is "ninety-two billion, seven hundred eighty-two million, two hundred fifty-seven thousand, nine hundred ninety-one".