77964236747 has 2 divisors, whose sum is σ = 77964236748. Its totient is φ = 77964236746.

The previous prime is 77964236731. The next prime is 77964236797. The reversal of 77964236747 is 74763246977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77964236747 - 2⁴ = 77964236731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77964236747.

It is not a weakly prime, because it can be changed into another prime (77964236717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38982118373 + 38982118374.

It is an arithmetic number, because the mean of its divisors is an integer number (38982118374).

Almost surely, 2^77964236747 is an apocalyptic number.

77964236747 is a deficient number, since it is larger than the sum of its proper divisors (1).

77964236747 is an equidigital number, since it uses as much as digits as its factorization.

77964236747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74680704, while the sum is 62.

The spelling of 77964236747 in words is "seventy-seven billion, nine hundred sixty-four million, two hundred thirty-six thousand, seven hundred forty-seven".