48439992281 has 2 divisors, whose sum is σ = 48439992282. Its totient is φ = 48439992280.

The previous prime is 48439992277. The next prime is 48439992317. The reversal of 48439992281 is 18229993484.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45375816256 + 3064176025 = 213016^2 + 55355^2 .

It is a cyclic number.

It is not a de Polignac number, because 48439992281 - 2² = 48439992277 is a prime.

It is a super-2 number, since 2×48439992281² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 48439992281.

It is not a weakly prime, because it can be changed into another prime (48439992581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24219996140 + 24219996141.

It is an arithmetic number, because the mean of its divisors is an integer number (24219996141).

Almost surely, 2^48439992281 is an apocalyptic number.

It is an amenable number.

48439992281 is a deficient number, since it is larger than the sum of its proper divisors (1).

48439992281 is an equidigital number, since it uses as much as digits as its factorization.

48439992281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 59.

The spelling of 48439992281 in words is "forty-eight billion, four hundred thirty-nine million, nine hundred ninety-two thousand, two hundred eighty-one".