21352001455323 has 48 divisors (see below), whose sum is σ = 39082451396352. Its totient is φ = 10910113560000.

The previous prime is 21352001455247. The next prime is 21352001455361. The reversal of 21352001455323 is 32355410025312.

21352001455323 is a `hidden beast` number, since 21 + 3 + 52 + 0 + 0 + 14 + 553 + 23 = 666.

It is not a de Polignac number, because 21352001455323 - 2⁸ = 21352001455067 is a prime.

It is a super-2 number, since 2×21352001455323² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21352001455123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 252506653 + ... + 252591198.

It is an arithmetic number, because the mean of its divisors is an integer number (814217737424).

Almost surely, 2^{21352001455323} is an apocalyptic number.

21352001455323 is a deficient number, since it is larger than the sum of its proper divisors (17730449941029).

21352001455323 is a wasteful number, since it uses less digits than its factorization.

21352001455323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505097936 (or 505097933 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 21352001455323 in words is "twenty-one trillion, three hundred fifty-two billion, one million, four hundred fifty-five thousand, three hundred twenty-three".