7758664741 has 2 divisors, whose sum is σ = 7758664742. Its totient is φ = 7758664740.

The previous prime is 7758664703. The next prime is 7758664747. The reversal of 7758664741 is 1474668577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5478220225 + 2280444516 = 74015^2 + 47754^2 .

It is an emirp because it is prime and its reverse (1474668577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7758664741 - 2¹⁵ = 7758631973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7758664747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3879332370 + 3879332371.

It is an arithmetic number, because the mean of its divisors is an integer number (3879332371).

Almost surely, 2^7758664741 is an apocalyptic number.

It is an amenable number.

7758664741 is a deficient number, since it is larger than the sum of its proper divisors (1).

7758664741 is an equidigital number, since it uses as much as digits as its factorization.

7758664741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7902720, while the sum is 55.

The square root of 7758664741 is about 88083.2829826409. The cubic root of 7758664741 is about 1979.6830378082.

The spelling of 7758664741 in words is "seven billion, seven hundred fifty-eight million, six hundred sixty-four thousand, seven hundred forty-one".