788742344693 has 2 divisors, whose sum is σ = 788742344694. Its totient is φ = 788742344692.

The previous prime is 788742344657. The next prime is 788742344707. The reversal of 788742344693 is 396443247887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719414401489 + 69327943204 = 848183^2 + 263302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788742344693 is a prime.

It is a super-2 number, since 2×788742344693² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (788742344603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394371172346 + 394371172347.

It is an arithmetic number, because the mean of its divisors is an integer number (394371172347).

Almost surely, 2^788742344693 is an apocalyptic number.

It is an amenable number.

788742344693 is a deficient number, since it is larger than the sum of its proper divisors (1).

788742344693 is an equidigital number, since it uses as much as digits as its factorization.

788742344693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 195084288, while the sum is 65.

The spelling of 788742344693 in words is "seven hundred eighty-eight billion, seven hundred forty-two million, three hundred forty-four thousand, six hundred ninety-three".