438015116677 has 2 divisors, whose sum is σ = 438015116678. Its totient is φ = 438015116676.

The previous prime is 438015116653. The next prime is 438015116713. The reversal of 438015116677 is 776611510834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417334088196 + 20681028481 = 646014^2 + 143809^2 .

It is a cyclic number.

It is not a de Polignac number, because 438015116677 - 2⁷ = 438015116549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 438015116677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438015116177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219007558338 + 219007558339.

It is an arithmetic number, because the mean of its divisors is an integer number (219007558339).

Almost surely, 2^438015116677 is an apocalyptic number.

It is an amenable number.

438015116677 is a deficient number, since it is larger than the sum of its proper divisors (1).

438015116677 is an equidigital number, since it uses as much as digits as its factorization.

438015116677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 438015116677 in words is "four hundred thirty-eight billion, fifteen million, one hundred sixteen thousand, six hundred seventy-seven".