78883727469 has 4 divisors (see below), whose sum is σ = 105178303296. Its totient is φ = 52589151644.

The previous prime is 78883727467. The next prime is 78883727479. The reversal of 78883727469 is 96472738887.

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 78883727469 - 2¹ = 78883727467 is a prime.

It is a super-2 number, since 2×78883727469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78883727467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13147287909 + ... + 13147287914.

It is an arithmetic number, because the mean of its divisors is an integer number (26294575824).

Almost surely, 2^78883727469 is an apocalyptic number.

It is an amenable number.

78883727469 is a deficient number, since it is larger than the sum of its proper divisors (26294575827).

78883727469 is a wasteful number, since it uses less digits than its factorization.

78883727469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26294575826.

The product of its digits is 227598336, while the sum is 69.

The spelling of 78883727469 in words is "seventy-eight billion, eight hundred eighty-three million, seven hundred twenty-seven thousand, four hundred sixty-nine".