84048883981 has 2 divisors, whose sum is σ = 84048883982. Its totient is φ = 84048883980.

The previous prime is 84048883979. The next prime is 84048884039. The reversal of 84048883981 is 18938884048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48980329225 + 35068554756 = 221315^2 + 187266^2 .

It is a cyclic number.

It is not a de Polignac number, because 84048883981 - 2¹ = 84048883979 is a prime.

It is a super-2 number, since 2×84048883981² (a number of 23 digits) contains 22 as substring.

Together with 84048883979, 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 (84048883921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42024441990 + 42024441991.

It is an arithmetic number, because the mean of its divisors is an integer number (42024441991).

Almost surely, 2^84048883981 is an apocalyptic number.

It is an amenable number.

84048883981 is a deficient number, since it is larger than the sum of its proper divisors (1).

84048883981 is an equidigital number, since it uses as much as digits as its factorization.

84048883981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14155776, while the sum is 61.

The spelling of 84048883981 in words is "eighty-four billion, forty-eight million, eight hundred eighty-three thousand, nine hundred eighty-one".