21304513546156 has 6 divisors (see below), whose sum is σ = 37282898705780. Its totient is φ = 10652256773076.

The previous prime is 21304513546097. The next prime is 21304513546181. The reversal of 21304513546156 is 65164531540312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2663064193266 + ... + 2663064193273.

Almost surely, 2^{21304513546156} is an apocalyptic number.

It is an amenable number.

21304513546156 is a deficient number, since it is larger than the sum of its proper divisors (15978385159624).

21304513546156 is a wasteful number, since it uses less digits than its factorization.

21304513546156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326128386543 (or 5326128386541 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 21304513546156 in words is "twenty-one trillion, three hundred four billion, five hundred thirteen million, five hundred forty-six thousand, one hundred fifty-six".