16557377064 has 32 divisors (see below), whose sum is σ = 41671260000. Its totient is φ = 5482083392.

The previous prime is 16557377063. The next prime is 16557377101. The reversal of 16557377064 is 46077375561.

16557377064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16557376998 and 16557377016.

It is not an unprimeable number, because it can be changed into a prime (16557377063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2311494 + ... + 2318645.

It is an arithmetic number, because the mean of its divisors is an integer number (1302226875).

Almost surely, 2^16557377064 is an apocalyptic number.

It is an amenable number.

16557377064 is an abundant number, since it is smaller than the sum of its proper divisors (25113882936).

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

16557377064 is a wasteful number, since it uses less digits than its factorization.

16557377064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630297 (or 4630293 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 51.

The spelling of 16557377064 in words is "sixteen billion, five hundred fifty-seven million, three hundred seventy-seven thousand, sixty-four".