21355456462003 has 8 divisors (see below), whose sum is σ = 22490452627200. Its totient is φ = 20221562774088.

The previous prime is 21355456461973. The next prime is 21355456462009. The reversal of 21355456462003 is 30026465455312.

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

It is a cyclic number.

It is not a de Polignac number, because 21355456462003 - 2⁹ = 21355456461491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21355456462009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275579551 + ... + 275657032.

It is an arithmetic number, because the mean of its divisors is an integer number (2811306578400).

Almost surely, 2^{21355456462003} is an apocalyptic number.

21355456462003 is a deficient number, since it is larger than the sum of its proper divisors (1134996165197).

21355456462003 is a wasteful number, since it uses less digits than its factorization.

21355456462003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551238641.

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 21355456462003 in words is "twenty-one trillion, three hundred fifty-five billion, four hundred fifty-six million, four hundred sixty-two thousand, three".