21048401828503 has 4 divisors (see below), whose sum is σ = 24055316375440. Its totient is φ = 18041487281568.

The previous prime is 21048401828491. The next prime is 21048401828551. The reversal of 21048401828503 is 30582810484012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21048401828503 - 2⁵ = 21048401828471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21048401828303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503457273458 + ... + 1503457273471.

It is an arithmetic number, because the mean of its divisors is an integer number (6013829093860).

Almost surely, 2^{21048401828503} is an apocalyptic number.

21048401828503 is a deficient number, since it is larger than the sum of its proper divisors (3006914546937).

21048401828503 is an equidigital number, since it uses as much as digits as its factorization.

21048401828503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006914546936.

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 21048401828503 in words is "twenty-one trillion, forty-eight billion, four hundred one million, eight hundred twenty-eight thousand, five hundred three".