48267691991 has 4 divisors (see below), whose sum is σ = 48287714184. Its totient is φ = 48247669800.

The previous prime is 48267691981. The next prime is 48267691993. The reversal of 48267691991 is 19919676284.

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 48267691991 - 2³⁴ = 31087822807 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 (48267691993) 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, 10007480 + ... + 10012301.

It is an arithmetic number, because the mean of its divisors is an integer number (12071928546).

Almost surely, 2^48267691991 is an apocalyptic number.

48267691991 is a deficient number, since it is larger than the sum of its proper divisors (20022193).

48267691991 is a wasteful number, since it uses less digits than its factorization.

48267691991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20022192.

The product of its digits is 11757312, while the sum is 62.

The spelling of 48267691991 in words is "forty-eight billion, two hundred sixty-seven million, six hundred ninety-one thousand, nine hundred ninety-one".