21416366100 has 36 divisors (see below), whose sum is σ = 61964686784. Its totient is φ = 5711030880.

The previous prime is 21416366047. The next prime is 21416366117. The reversal of 21416366100 is 166361412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35693644 + ... + 35694243.

Almost surely, 2^21416366100 is an apocalyptic number.

21416366100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21416366100 is an abundant number, since it is smaller than the sum of its proper divisors (40548320684).

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

21416366100 is a wasteful number, since it uses less digits than its factorization.

21416366100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71387904 (or 71387897 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 21416366100 in words is "twenty-one billion, four hundred sixteen million, three hundred sixty-six thousand, one hundred".