16434277440 has 112 divisors (see below), whose sum is σ = 59632973952. Its totient is φ = 3756404736.

The previous prime is 16434277427. The next prime is 16434277463. The reversal of 16434277440 is 4477243461.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 16434277392 and 16434277401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1216069 + ... + 1229508.

Almost surely, 2^16434277440 is an apocalyptic number.

16434277440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16434277440 is an abundant number, since it is smaller than the sum of its proper divisors (43198696512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16434277440 is a wasteful number, since it uses less digits than its factorization.

16434277440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445604 (or 2445594 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 16434277440 in words is "sixteen billion, four hundred thirty-four million, two hundred seventy-seven thousand, four hundred forty".