76446651087689 has 2 divisors, whose sum is σ = 76446651087690. Its totient is φ = 76446651087688.

The previous prime is 76446651087661. The next prime is 76446651087721. The reversal of 76446651087689 is 98678015664467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75662301734464 + 784349353225 = 8698408^2 + 885635^2 .

It is an emirp because it is prime and its reverse (98678015664467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76446651087689 - 2⁴⁰ = 75347139459913 is a prime.

It is not a weakly prime, because it can be changed into another prime (76446651087629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38223325543844 + 38223325543845.

It is an arithmetic number, because the mean of its divisors is an integer number (38223325543845).

Almost surely, 2^{76446651087689} is an apocalyptic number.

It is an amenable number.

76446651087689 is a deficient number, since it is larger than the sum of its proper divisors (1).

76446651087689 is an equidigital number, since it uses as much as digits as its factorization.

76446651087689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2926264320, while the sum is 77.

The spelling of 76446651087689 in words is "seventy-six trillion, four hundred forty-six billion, six hundred fifty-one million, eighty-seven thousand, six hundred eighty-nine".