21736469700 has 216 divisors, whose sum is σ = 77557910976. Its totient is φ = 5040288000.

The previous prime is 21736469669. The next prime is 21736469717. The reversal of 21736469700 is 796463712.

21736469700 is a `hidden beast` number, since 217 + 364 + 6 + 9 + 70 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 179970 + ... + 275430.

Almost surely, 2^21736469700 is an apocalyptic number.

21736469700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21736469700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38778955488).

21736469700 is an abundant number, since it is smaller than the sum of its proper divisors (55821441276).

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

21736469700 is a wasteful number, since it uses less digits than its factorization.

21736469700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95515 (or 95505 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 21736469700 in words is "twenty-one billion, seven hundred thirty-six million, four hundred sixty-nine thousand, seven hundred".