7740440501 has 2 divisors, whose sum is σ = 7740440502. Its totient is φ = 7740440500.

The previous prime is 7740440467. The next prime is 7740440503. The reversal of 7740440501 is 1050440477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7372798225 + 367642276 = 85865^2 + 19174^2 .

It is a cyclic number.

It is not a de Polignac number, because 7740440501 - 2¹⁰ = 7740439477 is a prime.

It is a super-2 number, since 2×7740440501² (a number of 21 digits) contains 22 as substring.

Together with 7740440503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7740440503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3870220250 + 3870220251.

It is an arithmetic number, because the mean of its divisors is an integer number (3870220251).

Almost surely, 2^7740440501 is an apocalyptic number.

It is an amenable number.

7740440501 is a deficient number, since it is larger than the sum of its proper divisors (1).

7740440501 is an equidigital number, since it uses as much as digits as its factorization.

7740440501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 7740440501 is about 87979.7732493100. The cubic root of 7740440501 is about 1978.1318042374.

Adding to 7740440501 its reverse (1050440477), we get a palindrome (8790880978).

The spelling of 7740440501 in words is "seven billion, seven hundred forty million, four hundred forty thousand, five hundred one".