438064703977 has 2 divisors, whose sum is σ = 438064703978. Its totient is φ = 438064703976.

The previous prime is 438064703953. The next prime is 438064704019. The reversal of 438064703977 is 779307460834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435130206736 + 2934497241 = 659644^2 + 54171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438064703977 is a prime.

It is not a weakly prime, because it can be changed into another prime (438064703927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219032351988 + 219032351989.

It is an arithmetic number, because the mean of its divisors is an integer number (219032351989).

Almost surely, 2^438064703977 is an apocalyptic number.

It is an amenable number.

438064703977 is a deficient number, since it is larger than the sum of its proper divisors (1).

438064703977 is an equidigital number, since it uses as much as digits as its factorization.

438064703977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 58.

The spelling of 438064703977 in words is "four hundred thirty-eight billion, sixty-four million, seven hundred three thousand, nine hundred seventy-seven".