21254016355304 has 64 divisors (see below), whose sum is σ = 40457786480640. Its totient is φ = 10466605393920.

The previous prime is 21254016355291. The next prime is 21254016355367. The reversal of 21254016355304 is 40355361045212.

It is a super-2 number, since 2×21254016355304² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102512864 + ... + 102719984.

It is an arithmetic number, because the mean of its divisors is an integer number (632152913760).

Almost surely, 2^{21254016355304} is an apocalyptic number.

It is an amenable number.

21254016355304 is a deficient number, since it is larger than the sum of its proper divisors (19203770125336).

21254016355304 is a wasteful number, since it uses less digits than its factorization.

21254016355304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207930 (or 207926 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 21254016355304 in words is "twenty-one trillion, two hundred fifty-four billion, sixteen million, three hundred fifty-five thousand, three hundred four".