78836316469 has 4 divisors (see below), whose sum is σ = 79089809760. Its totient is φ = 78582823180.

The previous prime is 78836316437. The next prime is 78836316479. The reversal of 78836316469 is 96461363887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78836316469 - 2⁵ = 78836316437 is a prime.

It is a super-2 number, since 2×78836316469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78836316479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126746179 + ... + 126746800.

It is an arithmetic number, because the mean of its divisors is an integer number (19772452440).

Almost surely, 2^78836316469 is an apocalyptic number.

It is an amenable number.

78836316469 is a deficient number, since it is larger than the sum of its proper divisors (253493291).

78836316469 is a wasteful number, since it uses less digits than its factorization.

78836316469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253493290.

The product of its digits is 31352832, while the sum is 61.

The spelling of 78836316469 in words is "seventy-eight billion, eight hundred thirty-six million, three hundred sixteen thousand, four hundred sixty-nine".