16323553974 has 64 divisors (see below), whose sum is σ = 41928090624. Its totient is φ = 4117931136.

The previous prime is 16323553943. The next prime is 16323553979. The reversal of 16323553974 is 47935532361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16323553979) 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, 637369 + ... + 662484.

It is an arithmetic number, because the mean of its divisors is an integer number (655126416).

Almost surely, 2^16323553974 is an apocalyptic number.

16323553974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16323553974 is an abundant number, since it is smaller than the sum of its proper divisors (25604536650).

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

16323553974 is a wasteful number, since it uses less digits than its factorization.

16323553974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299901.

The product of its digits is 2041200, while the sum is 48.

The spelling of 16323553974 in words is "sixteen billion, three hundred twenty-three million, five hundred fifty-three thousand, nine hundred seventy-four".