21343532631600 has 120 divisors (see below), whose sum is σ = 68371716800592. Its totient is φ = 5691503206400.

The previous prime is 21343532631581. The next prime is 21343532631643. The reversal of 21343532631600 is 613623534312.

It is a tau number, because it is divible by the number of its divisors (120).

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, 81422344 + ... + 81684056.

Almost surely, 2^{21343532631600} is an apocalyptic number.

21343532631600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21343532631600 is an abundant number, since it is smaller than the sum of its proper divisors (47028184168992).

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

21343532631600 is a wasteful number, since it uses less digits than its factorization.

21343532631600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329695 (or 329684 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 21343532631600 in words is "twenty-one trillion, three hundred forty-three billion, five hundred thirty-two million, six hundred thirty-one thousand, six hundred".