76447603010561 has 2 divisors, whose sum is σ = 76447603010562. Its totient is φ = 76447603010560.

The previous prime is 76447603010551. The next prime is 76447603010563. The reversal of 76447603010561 is 16501030674467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63061370972161 + 13386232038400 = 7941119^2 + 3658720^2 .

It is a cyclic number.

It is not a de Polignac number, because 76447603010561 - 2¹⁴ = 76447602994177 is a prime.

It is a super-3 number, since 3×76447603010561³ (a number of 43 digits) contains 333 as substring.

Together with 76447603010563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76447603010563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38223801505280 + 38223801505281.

It is an arithmetic number, because the mean of its divisors is an integer number (38223801505281).

Almost surely, 2^{76447603010561} is an apocalyptic number.

It is an amenable number.

76447603010561 is a deficient number, since it is larger than the sum of its proper divisors (1).

76447603010561 is an equidigital number, since it uses as much as digits as its factorization.

76447603010561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 76447603010561 in words is "seventy-six trillion, four hundred forty-seven billion, six hundred three million, ten thousand, five hundred sixty-one".