76706726549 has 2 divisors, whose sum is σ = 76706726550. Its totient is φ = 76706726548.

The previous prime is 76706726543. The next prime is 76706726597. The reversal of 76706726549 is 94562760767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76029790225 + 676936324 = 275735^2 + 26018^2 .

It is a cyclic number.

It is not a de Polignac number, because 76706726549 - 2⁴ = 76706726533 is a prime.

It is a super-2 number, since 2×76706726549² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76706726543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38353363274 + 38353363275.

It is an arithmetic number, because the mean of its divisors is an integer number (38353363275).

Almost surely, 2^76706726549 is an apocalyptic number.

It is an amenable number.

76706726549 is a deficient number, since it is larger than the sum of its proper divisors (1).

76706726549 is an equidigital number, since it uses as much as digits as its factorization.

76706726549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26671680, while the sum is 59.

The spelling of 76706726549 in words is "seventy-six billion, seven hundred six million, seven hundred twenty-six thousand, five hundred forty-nine".