48427872421 has 2 divisors, whose sum is σ = 48427872422. Its totient is φ = 48427872420.

The previous prime is 48427872419. The next prime is 48427872439. The reversal of 48427872421 is 12427872484.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48053024100 + 374848321 = 219210^2 + 19361^2 .

It is a cyclic number.

It is not a de Polignac number, because 48427872421 - 2¹ = 48427872419 is a prime.

Together with 48427872419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48427872721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24213936210 + 24213936211.

It is an arithmetic number, because the mean of its divisors is an integer number (24213936211).

Almost surely, 2^48427872421 is an apocalyptic number.

It is an amenable number.

48427872421 is a deficient number, since it is larger than the sum of its proper divisors (1).

48427872421 is an equidigital number, since it uses as much as digits as its factorization.

48427872421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1605632, while the sum is 49.

The spelling of 48427872421 in words is "forty-eight billion, four hundred twenty-seven million, eight hundred seventy-two thousand, four hundred twenty-one".