21740841511503 has 32 divisors (see below), whose sum is σ = 31225992794112. Its totient is φ = 13415597395200.

The previous prime is 21740841511453. The next prime is 21740841511517. The reversal of 21740841511503 is 30511514804712.

It is not a de Polignac number, because 21740841511503 - 2²⁰ = 21740840462927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21740841510503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31878051 + ... + 32552907.

It is an arithmetic number, because the mean of its divisors is an integer number (975812274816).

Almost surely, 2^{21740841511503} is an apocalyptic number.

21740841511503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21740841511503 is a deficient number, since it is larger than the sum of its proper divisors (9485151282609).

21740841511503 is a wasteful number, since it uses less digits than its factorization.

21740841511503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689975.

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 21740841511503 in words is "twenty-one trillion, seven hundred forty billion, eight hundred forty-one million, five hundred eleven thousand, five hundred three".