21470657004536 has 32 divisors (see below), whose sum is σ = 41563181721600. Its totient is φ = 10387259735520.

The previous prime is 21470657004529. The next prime is 21470657004539. The reversal of 21470657004536 is 63540075607412.

It is a super-3 number, since 3×21470657004536³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21470657004539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5905100 + ... + 8821083.

It is an arithmetic number, because the mean of its divisors is an integer number (1298849428800).

Almost surely, 2^{21470657004536} is an apocalyptic number.

It is an amenable number.

21470657004536 is a deficient number, since it is larger than the sum of its proper divisors (20092524717064).

21470657004536 is a wasteful number, since it uses less digits than its factorization.

21470657004536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14732099 (or 14732095 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 21470657004536 in words is "twenty-one trillion, four hundred seventy billion, six hundred fifty-seven million, four thousand, five hundred thirty-six".