7440123953 has 2 divisors, whose sum is σ = 7440123954. Its totient is φ = 7440123952.

The previous prime is 7440123877. The next prime is 7440123979. The reversal of 7440123953 is 3593210447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5915455744 + 1524668209 = 76912^2 + 39047^2 .

It is an emirp because it is prime and its reverse (3593210447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7440123953 - 2¹⁰ = 7440122929 is a prime.

It is not a weakly prime, because it can be changed into another prime (7440120953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3720061976 + 3720061977.

It is an arithmetic number, because the mean of its divisors is an integer number (3720061977).

Almost surely, 2^7440123953 is an apocalyptic number.

It is an amenable number.

7440123953 is a deficient number, since it is larger than the sum of its proper divisors (1).

7440123953 is an equidigital number, since it uses as much as digits as its factorization.

7440123953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 7440123953 is about 86256.1531312404. The cubic root of 7440123953 is about 1952.2108567216.

The spelling of 7440123953 in words is "seven billion, four hundred forty million, one hundred twenty-three thousand, nine hundred fifty-three".