26466334021 has 4 divisors (see below), whose sum is σ = 26468104972. Its totient is φ = 26464563072.

The previous prime is 26466333973. The next prime is 26466334067. The reversal of 26466334021 is 12043366462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11161922500 + 15304411521 = 105650^2 + 123711^2 .

It is a cyclic number.

It is not a de Polignac number, because 26466334021 - 2⁷ = 26466333893 is a prime.

It is a super-2 number, since 2×26466334021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26466334091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862866 + ... + 893011.

It is an arithmetic number, because the mean of its divisors is an integer number (6617026243).

Almost surely, 2^26466334021 is an apocalyptic number.

It is an amenable number.

26466334021 is a deficient number, since it is larger than the sum of its proper divisors (1770951).

26466334021 is a wasteful number, since it uses less digits than its factorization.

26466334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770950.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 26466334021 in words is "twenty-six billion, four hundred sixty-six million, three hundred thirty-four thousand, twenty-one".