6344669899819 has 4 divisors (see below), whose sum is σ = 6344915452920. Its totient is φ = 6344424346720.

The previous prime is 6344669899811. The next prime is 6344669899859. The reversal of 6344669899819 is 9189989664436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6344669899819 - 2³ = 6344669899811 is a prime.

It is a super-2 number, since 2×6344669899819² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6344669899811) 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, 122737789 + ... + 122789470.

It is an arithmetic number, because the mean of its divisors is an integer number (1586228863230).

Almost surely, 2^{6344669899819} is an apocalyptic number.

6344669899819 is a deficient number, since it is larger than the sum of its proper divisors (245553101).

6344669899819 is a wasteful number, since it uses less digits than its factorization.

6344669899819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245553100.

The product of its digits is 4353564672, while the sum is 82.

The spelling of 6344669899819 in words is "six trillion, three hundred forty-four billion, six hundred sixty-nine million, eight hundred ninety-nine thousand, eight hundred nineteen".