16451156500 has 24 divisors (see below), whose sum is σ = 35929326888. Its totient is φ = 6580462400.

The previous prime is 16451156497. The next prime is 16451156507. The reversal of 16451156500 is 565115461.

It can be written as a sum of positive squares in 4 ways, for example, as 264192516 + 16186963984 = 16254^2 + 127228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16451156507) 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, 16450657 + ... + 16451656.

It is an arithmetic number, because the mean of its divisors is an integer number (1497055287).

Almost surely, 2^16451156500 is an apocalyptic number.

16451156500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16451156500 is an abundant number, since it is smaller than the sum of its proper divisors (19478170388).

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

16451156500 is a wasteful number, since it uses less digits than its factorization.

16451156500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32902332 (or 32902320 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 16451156500 in words is "sixteen billion, four hundred fifty-one million, one hundred fifty-six thousand, five hundred".