21960743700 has 72 divisors (see below), whose sum is σ = 72616866112. Its totient is φ = 5019598080.

The previous prime is 21960743699. The next prime is 21960743729. The reversal of 21960743700 is 734706912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5226649 + ... + 5230848.

Almost surely, 2^21960743700 is an apocalyptic number.

21960743700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21960743700 is an abundant number, since it is smaller than the sum of its proper divisors (50656122412).

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

21960743700 is a wasteful number, since it uses less digits than its factorization.

21960743700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10457521 (or 10457514 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 21960743700 in words is "twenty-one billion, nine hundred sixty million, seven hundred forty-three thousand, seven hundred".