21232003016454 has 32 divisors (see below), whose sum is σ = 43186894848000. Its totient is φ = 6956870424864.

The previous prime is 21232003016437. The next prime is 21232003016461. The reversal of 21232003016454 is 45461030023212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2665467 + ... + 7040505.

It is an arithmetic number, because the mean of its divisors is an integer number (1349590464000).

Almost surely, 2^{21232003016454} is an apocalyptic number.

21232003016454 is an abundant number, since it is smaller than the sum of its proper divisors (21954891831546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232003016454 is a wasteful number, since it uses less digits than its factorization.

21232003016454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388812.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 21232003016454 its reverse (45461030023212), we get a palindrome (66693033039666).

The spelling of 21232003016454 in words is "twenty-one trillion, two hundred thirty-two billion, three million, sixteen thousand, four hundred fifty-four".