21452154303 has 16 divisors (see below), whose sum is σ = 30224286720. Its totient is φ = 13506471264.

The previous prime is 21452154301. The next prime is 21452154313. The reversal of 21452154303 is 30345125412.

It is not a de Polignac number, because 21452154303 - 2¹ = 21452154301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21452154301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1962276 + ... + 1973177.

It is an arithmetic number, because the mean of its divisors is an integer number (1889017920).

Almost surely, 2^21452154303 is an apocalyptic number.

21452154303 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21452154303 is a deficient number, since it is larger than the sum of its proper divisors (8772132417).

21452154303 is a wasteful number, since it uses less digits than its factorization.

21452154303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935558.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21452154303 its reverse (30345125412), we get a palindrome (51797279715).

The spelling of 21452154303 in words is "twenty-one billion, four hundred fifty-two million, one hundred fifty-four thousand, three hundred three".