48171739721 has 24 divisors (see below), whose sum is σ = 57564017280. Its totient is φ = 40170177600.

The previous prime is 48171739691. The next prime is 48171739729. The reversal of 48171739721 is 12793717184.

It is not a de Polignac number, because 48171739721 - 2³⁴ = 30991870537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 48171739721.

It is not an unprimeable number, because it can be changed into a prime (48171739729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 687836 + ... + 754626.

It is an arithmetic number, because the mean of its divisors is an integer number (2398500720).

Almost surely, 2^48171739721 is an apocalyptic number.

48171739721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

48171739721 is a deficient number, since it is larger than the sum of its proper divisors (9392277559).

48171739721 is a wasteful number, since it uses less digits than its factorization.

48171739721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67205 (or 67198 counting only the distinct ones).

The product of its digits is 592704, while the sum is 50.

The spelling of 48171739721 in words is "forty-eight billion, one hundred seventy-one million, seven hundred thirty-nine thousand, seven hundred twenty-one".