48421637861 has 2 divisors, whose sum is σ = 48421637862. Its totient is φ = 48421637860.

The previous prime is 48421637833. The next prime is 48421637881. The reversal of 48421637861 is 16873612484.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36254444836 + 12167193025 = 190406^2 + 110305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48421637861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48421637881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24210818930 + 24210818931.

It is an arithmetic number, because the mean of its divisors is an integer number (24210818931).

Almost surely, 2^48421637861 is an apocalyptic number.

It is an amenable number.

48421637861 is a deficient number, since it is larger than the sum of its proper divisors (1).

48421637861 is an equidigital number, since it uses as much as digits as its factorization.

48421637861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 50.

The spelling of 48421637861 in words is "forty-eight billion, four hundred twenty-one million, six hundred thirty-seven thousand, eight hundred sixty-one".