16344843477 has 32 divisors (see below), whose sum is σ = 23855432832. Its totient is φ = 9913688064.

The previous prime is 16344843451. The next prime is 16344843481. The reversal of 16344843477 is 77434844361.

It is not a de Polignac number, because 16344843477 - 2⁶ = 16344843413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16344843377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174303 + ... + 251139.

It is an arithmetic number, because the mean of its divisors is an integer number (745482276).

Almost surely, 2^16344843477 is an apocalyptic number.

16344843477 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16344843477 is a deficient number, since it is larger than the sum of its proper divisors (7510589355).

16344843477 is a wasteful number, since it uses less digits than its factorization.

16344843477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76997.

The product of its digits is 5419008, while the sum is 51.

The spelling of 16344843477 in words is "sixteen billion, three hundred forty-four million, eight hundred forty-three thousand, four hundred seventy-seven".