91885571714 has 4 divisors (see below), whose sum is σ = 137828357574. Its totient is φ = 45942785856.

The previous prime is 91885571683. The next prime is 91885571759. The reversal of 91885571714 is 41717558819.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 91757497225 + 128074489 = 302915^2 + 11317^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91885571714.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22971392927 + ... + 22971392930.

Almost surely, 2^91885571714 is an apocalyptic number.

91885571714 is a deficient number, since it is larger than the sum of its proper divisors (45942785860).

91885571714 is a wasteful number, since it uses less digits than its factorization.

91885571714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45942785859.

The product of its digits is 2822400, while the sum is 56.

The spelling of 91885571714 in words is "ninety-one billion, eight hundred eighty-five million, five hundred seventy-one thousand, seven hundred fourteen".