21533100877003 has 16 divisors (see below), whose sum is σ = 22548850632000. Its totient is φ = 20524057804800.

The previous prime is 21533100876997. The next prime is 21533100877063. The reversal of 21533100877003 is 30077800133512.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21533100877003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21533100877063) 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, 11051403 + ... + 12853003.

It is an arithmetic number, because the mean of its divisors is an integer number (1409303164500).

Almost surely, 2^{21533100877003} is an apocalyptic number.

21533100877003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21533100877003 is a deficient number, since it is larger than the sum of its proper divisors (1015749754997).

21533100877003 is a wasteful number, since it uses less digits than its factorization.

21533100877003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803462.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 21533100877003 in words is "twenty-one trillion, five hundred thirty-three billion, one hundred million, eight hundred seventy-seven thousand, three".