21047357300 has 36 divisors (see below), whose sum is σ = 45681409536. Its totient is φ = 8417349600.

The previous prime is 21047357281. The next prime is 21047357327. The reversal of 21047357300 is 375374012.

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, 610319 + ... + 643881.

Almost surely, 2^21047357300 is an apocalyptic number.

21047357300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21047357300 is an abundant number, since it is smaller than the sum of its proper divisors (24634052236).

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

21047357300 is a wasteful number, since it uses less digits than its factorization.

21047357300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39848 (or 39841 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 21047357300 in words is "twenty-one billion, forty-seven million, three hundred fifty-seven thousand, three hundred".