84881240293 has 2 divisors, whose sum is σ = 84881240294. Its totient is φ = 84881240292.

The previous prime is 84881240237. The next prime is 84881240299. The reversal of 84881240293 is 39204218848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79852586724 + 5028653569 = 282582^2 + 70913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84881240293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84881240299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42440620146 + 42440620147.

It is an arithmetic number, because the mean of its divisors is an integer number (42440620147).

Almost surely, 2^84881240293 is an apocalyptic number.

It is an amenable number.

84881240293 is a deficient number, since it is larger than the sum of its proper divisors (1).

84881240293 is an equidigital number, since it uses as much as digits as its factorization.

84881240293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 84881240293 in words is "eighty-four billion, eight hundred eighty-one million, two hundred forty thousand, two hundred ninety-three".