26076442221 has 12 divisors (see below), whose sum is σ = 37786314748. Its totient is φ = 17328752064.

The previous prime is 26076442207. The next prime is 26076442229. The reversal of 26076442221 is 12224467062.

26076442221 is a `hidden beast` number, since 2 + 6 + 0 + 7 + 644 + 2 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6227577225 + 19848864996 = 78915^2 + 140886^2 .

It is not a de Polignac number, because 26076442221 - 2¹³ = 26076434029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26076442229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4625590 + ... + 4631223.

Almost surely, 2^26076442221 is an apocalyptic number.

It is an amenable number.

26076442221 is a deficient number, since it is larger than the sum of its proper divisors (11709872527).

26076442221 is a wasteful number, since it uses less digits than its factorization.

26076442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257132 (or 9257129 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 26076442221 in words is "twenty-six billion, seventy-six million, four hundred forty-two thousand, two hundred twenty-one".