21195266700 has 36 divisors (see below), whose sum is σ = 61324972520. Its totient is φ = 5652071040.

The previous prime is 21195266683. The next prime is 21195266737. The reversal of 21195266700 is 766259112.

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, 35325145 + ... + 35325744.

Almost surely, 2^21195266700 is an apocalyptic number.

21195266700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21195266700 is an abundant number, since it is smaller than the sum of its proper divisors (40129705820).

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

21195266700 is a wasteful number, since it uses less digits than its factorization.

21195266700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70650906 (or 70650899 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 21195266700 in words is "twenty-one billion, one hundred ninety-five million, two hundred sixty-six thousand, seven hundred".