26403630121 has 8 divisors (see below), whose sum is σ = 30498310944. Its totient is φ = 22591341120.

The previous prime is 26403630119. The next prime is 26403630157. The reversal of 26403630121 is 12103630462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26403630121 - 2¹ = 26403630119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26403630121.

It is not an unprimeable number, because it can be changed into a prime (26403630101) 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 7 ways as a sum of consecutive naturals, for example, 70597755 + ... + 70598128.

It is an arithmetic number, because the mean of its divisors is an integer number (3812288868).

Almost surely, 2^26403630121 is an apocalyptic number.

It is an amenable number.

26403630121 is a deficient number, since it is larger than the sum of its proper divisors (4094680823).

26403630121 is a wasteful number, since it uses less digits than its factorization.

26403630121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141195911.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 26403630121 in words is "twenty-six billion, four hundred three million, six hundred thirty thousand, one hundred twenty-one".