766307525749 has 2 divisors, whose sum is σ = 766307525750. Its totient is φ = 766307525748.

The previous prime is 766307525723. The next prime is 766307525761. The reversal of 766307525749 is 947525703667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 733104126225 + 33203399524 = 856215^2 + 182218^2 .

It is an emirp because it is prime and its reverse (947525703667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 766307525749 - 2⁹ = 766307525237 is a prime.

It is a super-2 number, since 2×766307525749² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766307525149) 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, 383153762874 + 383153762875.

It is an arithmetic number, because the mean of its divisors is an integer number (383153762875).

Almost surely, 2^766307525749 is an apocalyptic number.

It is an amenable number.

766307525749 is a deficient number, since it is larger than the sum of its proper divisors (1).

766307525749 is an equidigital number, since it uses as much as digits as its factorization.

766307525749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66679200, while the sum is 61.

The spelling of 766307525749 in words is "seven hundred sixty-six billion, three hundred seven million, five hundred twenty-five thousand, seven hundred forty-nine".