21411507733 has 16 divisors (see below), whose sum is σ = 26733565440. Its totient is φ = 16660105200.

The previous prime is 21411507673. The next prime is 21411507757. The reversal of 21411507733 is 33770511412.

It is a cyclic number.

It is not a de Polignac number, because 21411507733 - 2¹⁷ = 21411376661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411507773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148003 + ... + 254416.

It is an arithmetic number, because the mean of its divisors is an integer number (1670847840).

Almost surely, 2^21411507733 is an apocalyptic number.

It is an amenable number.

21411507733 is a deficient number, since it is larger than the sum of its proper divisors (5322057707).

21411507733 is a wasteful number, since it uses less digits than its factorization.

21411507733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403128.

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 21411507733 in words is "twenty-one billion, four hundred eleven million, five hundred seven thousand, seven hundred thirty-three".