21140258403 has 16 divisors (see below), whose sum is σ = 30766079232. Its totient is φ = 12805356000.

The previous prime is 21140258311. The next prime is 21140258417. The reversal of 21140258403 is 30485204112.

It is not a de Polignac number, because 21140258403 - 2¹³ = 21140250211 is a prime.

It is a super-2 number, since 2×21140258403² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21140258483) 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, 110703 + ... + 233528.

It is an arithmetic number, because the mean of its divisors is an integer number (1922879952).

Almost surely, 2^21140258403 is an apocalyptic number.

21140258403 is a deficient number, since it is larger than the sum of its proper divisors (9625820829).

21140258403 is a wasteful number, since it uses less digits than its factorization.

21140258403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346106.

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 21140258403 in words is "twenty-one billion, one hundred forty million, two hundred fifty-eight thousand, four hundred three".