21047034570 has 16 divisors (see below), whose sum is σ = 50512883040. Its totient is φ = 5612542544.

The previous prime is 21047034473. The next prime is 21047034571. The reversal of 21047034570 is 7543074012.

It is not an unprimeable number, because it can be changed into a prime (21047034571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350783880 + ... + 350783939.

It is an arithmetic number, because the mean of its divisors is an integer number (3157055190).

Almost surely, 2^21047034570 is an apocalyptic number.

21047034570 is an abundant number, since it is smaller than the sum of its proper divisors (29465848470).

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

21047034570 is a wasteful number, since it uses less digits than its factorization.

21047034570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701567829.

The product of its (nonzero) digits is 23520, while the sum is 33.

The spelling of 21047034570 in words is "twenty-one billion, forty-seven million, thirty-four thousand, five hundred seventy".