21307437411 has 16 divisors (see below), whose sum is σ = 30601773216. Its totient is φ = 13109492736.

The previous prime is 21307437397. The next prime is 21307437511. The reversal of 21307437411 is 11473470312.

It is not a de Polignac number, because 21307437411 - 2¹⁴ = 21307421027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21307437511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137011 + ... + 247763.

It is an arithmetic number, because the mean of its divisors is an integer number (1912610826).

Almost surely, 2^21307437411 is an apocalyptic number.

21307437411 is a deficient number, since it is larger than the sum of its proper divisors (9294335805).

21307437411 is a wasteful number, since it uses less digits than its factorization.

21307437411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115702.

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 21307437411 in words is "twenty-one billion, three hundred seven million, four hundred thirty-seven thousand, four hundred eleven".