21541468203 has 24 divisors (see below), whose sum is σ = 31635641856. Its totient is φ = 14121043200.

The previous prime is 21541468153. The next prime is 21541468219. The reversal of 21541468203 is 30286414512.

It is a happy number.

21541468203 is a `hidden beast` number, since 215 + 414 + 6 + 8 + 20 + 3 = 666.

It is not a de Polignac number, because 21541468203 - 2²⁰ = 21540419627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21541418203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3431958 + ... + 3438228.

It is an arithmetic number, because the mean of its divisors is an integer number (1318151744).

Almost surely, 2^21541468203 is an apocalyptic number.

21541468203 is a deficient number, since it is larger than the sum of its proper divisors (10094173653).

21541468203 is a wasteful number, since it uses less digits than its factorization.

21541468203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12595 (or 12592 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 21541468203 in words is "twenty-one billion, five hundred forty-one million, four hundred sixty-eight thousand, two hundred three".