21436315245603 has 8 divisors (see below), whose sum is σ = 31757504067600. Its totient is φ = 14290876830384.

The previous prime is 21436315245589. The next prime is 21436315245749. The reversal of 21436315245603 is 30654251363412.

21436315245603 is a `hidden beast` number, since 2 + 1 + 4 + 3 + 6 + 3 + 15 + 24 + 5 + 603 = 666.

It is not a de Polignac number, because 21436315245603 - 2¹³ = 21436315237411 is a prime.

It is a super-2 number, since 2×21436315245603² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21436315245203) 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, 396968800818 + ... + 396968800871.

It is an arithmetic number, because the mean of its divisors is an integer number (3969688008450).

Almost surely, 2^{21436315245603} is an apocalyptic number.

21436315245603 is a deficient number, since it is larger than the sum of its proper divisors (10321188821997).

21436315245603 is an equidigital number, since it uses as much as digits as its factorization.

21436315245603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793937601698 (or 793937601692 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 21436315245603 in words is "twenty-one trillion, four hundred thirty-six billion, three hundred fifteen million, two hundred forty-five thousand, six hundred three".