7235740423981 has 2 divisors, whose sum is σ = 7235740423982. Its totient is φ = 7235740423980.

The previous prime is 7235740423979. The next prime is 7235740424057. The reversal of 7235740423981 is 1893240475327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6122432666025 + 1113307757956 = 2474355^2 + 1055134^2 .

It is a cyclic number.

It is not a de Polignac number, because 7235740423981 - 2¹ = 7235740423979 is a prime.

It is a super-2 number, since 2×7235740423981² (a number of 27 digits) contains 22 as substring.

Together with 7235740423979, 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 (7235740423481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3617870211990 + 3617870211991.

It is an arithmetic number, because the mean of its divisors is an integer number (3617870211991).

Almost surely, 2^{7235740423981} is an apocalyptic number.

It is an amenable number.

7235740423981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7235740423981 is an equidigital number, since it uses as much as digits as its factorization.

7235740423981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 7235740423981 in words is "seven trillion, two hundred thirty-five billion, seven hundred forty million, four hundred twenty-three thousand, nine hundred eighty-one".