76423857091 has 4 divisors (see below), whose sum is σ = 76424500384. Its totient is φ = 76423213800.

The previous prime is 76423857071. The next prime is 76423857199. The reversal of 76423857091 is 19075832467.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 76423857091 - 2¹⁹ = 76423332803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76423857011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85800 + ... + 400261.

It is an arithmetic number, because the mean of its divisors is an integer number (19106125096).

It is a 1-persistent number, because it is pandigital, but 2⋅76423857091 = 152847714182 is not.

Almost surely, 2^76423857091 is an apocalyptic number.

76423857091 is a deficient number, since it is larger than the sum of its proper divisors (643293).

76423857091 is a wasteful number, since it uses less digits than its factorization.

76423857091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643292.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 76423857091 in words is "seventy-six billion, four hundred twenty-three million, eight hundred fifty-seven thousand, ninety-one".