77419816369 has 4 divisors (see below), whose sum is σ = 88479790144. Its totient is φ = 66359842596.

The previous prime is 77419816351. The next prime is 77419816387. The reversal of 77419816369 is 96361891477.

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 an interprime number because it is at equal distance from previous prime (77419816351) and next prime (77419816387).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77419816369 is a prime.

It is a super-2 number, since 2×77419816369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77419816319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5529986877 + ... + 5529986890.

It is an arithmetic number, because the mean of its divisors is an integer number (22119947536).

Almost surely, 2^77419816369 is an apocalyptic number.

It is an amenable number.

77419816369 is a deficient number, since it is larger than the sum of its proper divisors (11059973775).

77419816369 is a wasteful number, since it uses less digits than its factorization.

77419816369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11059973774.

The product of its digits is 13716864, while the sum is 61.

The spelling of 77419816369 in words is "seventy-seven billion, four hundred nineteen million, eight hundred sixteen thousand, three hundred sixty-nine".