16344557949 has 8 divisors (see below), whose sum is σ = 21793776480. Its totient is φ = 10895855696.

The previous prime is 16344557917. The next prime is 16344557959. The reversal of 16344557949 is 94975544361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16344557949 - 2⁵ = 16344557917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16344557959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47907 + ... + 187040.

It is an arithmetic number, because the mean of its divisors is an integer number (2724222060).

Almost surely, 2^16344557949 is an apocalyptic number.

It is an amenable number.

16344557949 is a deficient number, since it is larger than the sum of its proper divisors (5449218531).

16344557949 is a wasteful number, since it uses less digits than its factorization.

16344557949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258139.

The product of its digits is 16329600, while the sum is 57.

The spelling of 16344557949 in words is "sixteen billion, three hundred forty-four million, five hundred fifty-seven thousand, nine hundred forty-nine".