21040026516211 has 16 divisors (see below), whose sum is σ = 22354116035328. Its totient is φ = 19768035657600.

The previous prime is 21040026516169. The next prime is 21040026516347. The reversal of 21040026516211 is 11261562004012.

It is a happy number.

It is not a de Polignac number, because 21040026516211 - 2¹⁹ = 21040025991923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21040026516611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19366600 + ... + 20424133.

It is an arithmetic number, because the mean of its divisors is an integer number (1397132252208).

Almost surely, 2^{21040026516211} is an apocalyptic number.

21040026516211 is a deficient number, since it is larger than the sum of its proper divisors (1314089519117).

21040026516211 is a wasteful number, since it uses less digits than its factorization.

21040026516211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39791262.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 21040026516211 in words is "twenty-one trillion, forty billion, twenty-six million, five hundred sixteen thousand, two hundred eleven".