26424542121 has 4 divisors (see below), whose sum is σ = 35232722832. Its totient is φ = 17616361412.

The previous prime is 26424542099. The next prime is 26424542129. The reversal of 26424542121 is 12124542462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26424542121 - 2⁶ = 26424542057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26424542129) 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, 4404090351 + ... + 4404090356.

It is an arithmetic number, because the mean of its divisors is an integer number (8808180708).

Almost surely, 2^26424542121 is an apocalyptic number.

It is an amenable number.

26424542121 is a deficient number, since it is larger than the sum of its proper divisors (8808180711).

26424542121 is an equidigital number, since it uses as much as digits as its factorization.

26424542121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8808180710.

The product of its digits is 30720, while the sum is 33.

The spelling of 26424542121 in words is "twenty-six billion, four hundred twenty-four million, five hundred forty-two thousand, one hundred twenty-one".