26631234421 has 4 divisors (see below), whose sum is σ = 29052255744. Its totient is φ = 24210213100.

The previous prime is 26631234379. The next prime is 26631234431. The reversal of 26631234421 is 12443213662.

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 26631234421 - 2²³ = 26622845813 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 (26631234431) 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, 1210510645 + ... + 1210510666.

It is an arithmetic number, because the mean of its divisors is an integer number (7263063936).

Almost surely, 2^26631234421 is an apocalyptic number.

It is an amenable number.

26631234421 is a deficient number, since it is larger than the sum of its proper divisors (2421021323).

26631234421 is a wasteful number, since it uses less digits than its factorization.

26631234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421021322.

The product of its digits is 41472, while the sum is 34.

The spelling of 26631234421 in words is "twenty-six billion, six hundred thirty-one million, two hundred thirty-four thousand, four hundred twenty-one".