48309127991 has 4 divisors (see below), whose sum is σ = 48736642512. Its totient is φ = 47881613472.

The previous prime is 48309127969. The next prime is 48309128027. The reversal of 48309127991 is 19972190384.

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 48309127991 - 2⁶ = 48309127927 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 (48309127591) 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, 213757091 + ... + 213757316.

It is an arithmetic number, because the mean of its divisors is an integer number (12184160628).

Almost surely, 2^48309127991 is an apocalyptic number.

48309127991 is a deficient number, since it is larger than the sum of its proper divisors (427514521).

48309127991 is a wasteful number, since it uses less digits than its factorization.

48309127991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427514520.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 48309127991 in words is "forty-eight billion, three hundred nine million, one hundred twenty-seven thousand, nine hundred ninety-one".