48831951221 has 4 divisors (see below), whose sum is σ = 48832398912. Its totient is φ = 48831503532.

The previous prime is 48831951211. The next prime is 48831951229. The reversal of 48831951221 is 12215913884.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 48831951221 - 2³⁰ = 47758209397 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 (48831951229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58370 + ... + 317916.

It is an arithmetic number, because the mean of its divisors is an integer number (12208099728).

Almost surely, 2^48831951221 is an apocalyptic number.

It is an amenable number.

48831951221 is a deficient number, since it is larger than the sum of its proper divisors (447691).

48831951221 is a wasteful number, since it uses less digits than its factorization.

48831951221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447690.

The product of its digits is 138240, while the sum is 44.

The spelling of 48831951221 in words is "forty-eight billion, eight hundred thirty-one million, nine hundred fifty-one thousand, two hundred twenty-one".