78414252673 has 2 divisors, whose sum is σ = 78414252674. Its totient is φ = 78414252672.

The previous prime is 78414252667. The next prime is 78414252701. The reversal of 78414252673 is 37625241487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64797229809 + 13617022864 = 254553^2 + 116692^2 .

It is an emirp because it is prime and its reverse (37625241487) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78414252673 is a prime.

It is a super-2 number, since 2×78414252673² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78414252473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39207126336 + 39207126337.

It is an arithmetic number, because the mean of its divisors is an integer number (39207126337).

Almost surely, 2^78414252673 is an apocalyptic number.

It is an amenable number.

78414252673 is a deficient number, since it is larger than the sum of its proper divisors (1).

78414252673 is an equidigital number, since it uses as much as digits as its factorization.

78414252673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 49.

The spelling of 78414252673 in words is "seventy-eight billion, four hundred fourteen million, two hundred fifty-two thousand, six hundred seventy-three".