2154206221503 has 8 divisors (see below), whose sum is σ = 3282599956608. Its totient is φ = 1230974983704.

The previous prime is 2154206221501. The next prime is 2154206221513. The reversal of 2154206221503 is 3051226024512.

It is a happy number.

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

It is not a de Polignac number, because 2154206221503 - 2¹ = 2154206221501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154206221501) 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, 51290624301 + ... + 51290624342.

It is an arithmetic number, because the mean of its divisors is an integer number (410324994576).

Almost surely, 2^{2154206221503} is an apocalyptic number.

2154206221503 is a deficient number, since it is larger than the sum of its proper divisors (1128393735105).

2154206221503 is a wasteful number, since it uses less digits than its factorization.

2154206221503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102581248653.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 2154206221503 in words is "two trillion, one hundred fifty-four billion, two hundred six million, two hundred twenty-one thousand, five hundred three".