16321926550 has 48 divisors (see below), whose sum is σ = 31407364800. Its totient is φ = 6305852160.

The previous prime is 16321926547. The next prime is 16321926581. The reversal of 16321926550 is 5562912361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221251 + ... + 285649.

It is an arithmetic number, because the mean of its divisors is an integer number (654320100).

Almost surely, 2^16321926550 is an apocalyptic number.

16321926550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16321926550 is a deficient number, since it is larger than the sum of its proper divisors (15085438250).

16321926550 is a wasteful number, since it uses less digits than its factorization.

16321926550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64585 (or 64580 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 16321926550 in words is "sixteen billion, three hundred twenty-one million, nine hundred twenty-six thousand, five hundred fifty".