21542011035003 has 12 divisors (see below), whose sum is σ = 31163312660688. Its totient is φ = 14339613998160.

The previous prime is 21542011034989. The next prime is 21542011035007. The reversal of 21542011035003 is 30053011024512.

21542011035003 is a `hidden beast` number, since 2 + 1 + 5 + 42 + 0 + 110 + 3 + 500 + 3 = 666.

It is not a de Polignac number, because 21542011035003 - 2²¹ = 21542008937851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21542011035007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1810551375 + ... + 1810563272.

It is an arithmetic number, because the mean of its divisors is an integer number (2596942721724).

Almost surely, 2^{21542011035003} is an apocalyptic number.

21542011035003 is a deficient number, since it is larger than the sum of its proper divisors (9621301625685).

21542011035003 is a wasteful number, since it uses less digits than its factorization.

21542011035003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621115314 (or 3621115311 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 21542011035003 its reverse (30053011024512), we get a palindrome (51595022059515).

The spelling of 21542011035003 in words is "twenty-one trillion, five hundred forty-two billion, eleven million, thirty-five thousand, three".