16378769719 has 4 divisors (see below), whose sum is σ = 17638675096. Its totient is φ = 15118864344.

The previous prime is 16378769707. The next prime is 16378769777. The reversal of 16378769719 is 91796787361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91796787361 = 37 ⋅2480994253.

It is a cyclic number.

It is not a de Polignac number, because 16378769719 - 2¹⁵ = 16378736951 is a prime.

It is a super-2 number, since 2×16378769719² (a number of 21 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 (16378769779) 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, 629952669 + ... + 629952694.

It is an arithmetic number, because the mean of its divisors is an integer number (4409668774).

Almost surely, 2^16378769719 is an apocalyptic number.

16378769719 is a deficient number, since it is larger than the sum of its proper divisors (1259905377).

16378769719 is a wasteful number, since it uses less digits than its factorization.

16378769719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259905376.

The product of its digits is 24004512, while the sum is 64.

The spelling of 16378769719 in words is "sixteen billion, three hundred seventy-eight million, seven hundred sixty-nine thousand, seven hundred nineteen".