48381089921 has 2 divisors, whose sum is σ = 48381089922. Its totient is φ = 48381089920.

The previous prime is 48381089899. The next prime is 48381089947. The reversal of 48381089921 is 12998018384.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24699265600 + 23681824321 = 157160^2 + 153889^2 .

It is a cyclic number.

It is not a de Polignac number, because 48381089921 - 2³⁴ = 31201220737 is a prime.

It is not a weakly prime, because it can be changed into another prime (48381089621) 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 as a sum of consecutive naturals, namely, 24190544960 + 24190544961.

It is an arithmetic number, because the mean of its divisors is an integer number (24190544961).

Almost surely, 2^48381089921 is an apocalyptic number.

It is an amenable number.

48381089921 is a deficient number, since it is larger than the sum of its proper divisors (1).

48381089921 is an equidigital number, since it uses as much as digits as its factorization.

48381089921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 48381089921 in words is "forty-eight billion, three hundred eighty-one million, eighty-nine thousand, nine hundred twenty-one".