293933225285681 has 2 divisors, whose sum is σ = 293933225285682. Its totient is φ = 293933225285680.

The previous prime is 293933225285621. The next prime is 293933225285717. The reversal of 293933225285681 is 186582522339392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293464000285681 + 469225000000 = 17130791^2 + 685000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-293933225285681 is a prime.

It is a super-2 number, since 2×293933225285681² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (293933225285621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 146966612642840 + 146966612642841.

It is an arithmetic number, because the mean of its divisors is an integer number (146966612642841).

Almost surely, 2^{293933225285681} is an apocalyptic number.

It is an amenable number.

293933225285681 is a deficient number, since it is larger than the sum of its proper divisors (1).

293933225285681 is an equidigital number, since it uses as much as digits as its factorization.

293933225285681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 335923200, while the sum is 68.

The spelling of 293933225285681 in words is "two hundred ninety-three trillion, nine hundred thirty-three billion, two hundred twenty-five million, two hundred eighty-five thousand, six hundred eighty-one".