21047041300 has 36 divisors (see below), whose sum is σ = 45679131036. Its totient is φ = 8417516800.

The previous prime is 21047041297. The next prime is 21047041303. The reversal of 21047041300 is 314074012.

It is an interprime number because it is at equal distance from previous prime (21047041297) and next prime (21047041303).

It can be written as a sum of positive squares in 6 ways, for example, as 3581304336 + 17465736964 = 59844^2 + 132158^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21047041303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881520 + ... + 905080.

It is an arithmetic number, because the mean of its divisors is an integer number (1268864751).

Almost surely, 2^21047041300 is an apocalyptic number.

21047041300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21047041300 is an abundant number, since it is smaller than the sum of its proper divisors (24632089736).

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

21047041300 is a wasteful number, since it uses less digits than its factorization.

21047041300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32508 (or 32501 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The spelling of 21047041300 in words is "twenty-one billion, forty-seven million, forty-one thousand, three hundred".