21603145770241 has 8 divisors (see below), whose sum is σ = 24689359966784. Its totient is φ = 18516944202480.

The previous prime is 21603145770197. The next prime is 21603145770253. The reversal of 21603145770241 is 14207754130612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21603145770241 - 2¹⁹ = 21603145245953 is a prime.

It is a super-2 number, since 2×21603145770241² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21603145773241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847006 + ... + 6627496.

It is an arithmetic number, because the mean of its divisors is an integer number (3086169995848).

Almost surely, 2^{21603145770241} is an apocalyptic number.

It is an amenable number.

21603145770241 is a deficient number, since it is larger than the sum of its proper divisors (3086214196543).

21603145770241 is an equidigital number, since it uses as much as digits as its factorization.

21603145770241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6314391.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 21603145770241 in words is "twenty-one trillion, six hundred three billion, one hundred forty-five million, seven hundred seventy thousand, two hundred forty-one".