16377556416 has 56 divisors (see below), whose sum is σ = 46665544464. Its totient is φ = 5039247360.

The previous prime is 16377556379. The next prime is 16377556417. The reversal of 16377556416 is 61465577361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16377556417) 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, 3278265 + ... + 3283256.

It is an arithmetic number, because the mean of its divisors is an integer number (833313294).

Almost surely, 2^16377556416 is an apocalyptic number.

16377556416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16377556416 is an abundant number, since it is smaller than the sum of its proper divisors (30287988048).

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

16377556416 is a wasteful number, since it uses less digits than its factorization.

16377556416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561549 (or 6561539 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 51.

The spelling of 16377556416 in words is "sixteen billion, three hundred seventy-seven million, five hundred fifty-six thousand, four hundred sixteen".