94051809991 has 4 divisors (see below), whose sum is σ = 94792375552. Its totient is φ = 93311244432.

The previous prime is 94051809871. The next prime is 94051810003. The reversal of 94051809991 is 19990815049.

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

It is a cyclic number.

It is not a de Polignac number, because 94051809991 - 2²¹ = 94049712839 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 (94051809391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370282590 + ... + 370282843.

It is an arithmetic number, because the mean of its divisors is an integer number (23698093888).

Almost surely, 2^94051809991 is an apocalyptic number.

94051809991 is a deficient number, since it is larger than the sum of its proper divisors (740565561).

94051809991 is a wasteful number, since it uses less digits than its factorization.

94051809991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740565560.

The product of its (nonzero) digits is 1049760, while the sum is 55.

The spelling of 94051809991 in words is "ninety-four billion, fifty-one million, eight hundred nine thousand, nine hundred ninety-one".