77434164037 has 2 divisors, whose sum is σ = 77434164038. Its totient is φ = 77434164036.

The previous prime is 77434164013. The next prime is 77434164053. The reversal of 77434164037 is 73046143477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72353468196 + 5080695841 = 268986^2 + 71279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77434164037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77434164077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38717082018 + 38717082019.

It is an arithmetic number, because the mean of its divisors is an integer number (38717082019).

Almost surely, 2^77434164037 is an apocalyptic number.

It is an amenable number.

77434164037 is a deficient number, since it is larger than the sum of its proper divisors (1).

77434164037 is an equidigital number, since it uses as much as digits as its factorization.

77434164037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 46.

The spelling of 77434164037 in words is "seventy-seven billion, four hundred thirty-four million, one hundred sixty-four thousand, thirty-seven".