26263031421 has 32 divisors (see below), whose sum is σ = 39044284416. Its totient is φ = 15569064000.

The previous prime is 26263031407. The next prime is 26263031429. The reversal of 26263031421 is 12413036262.

It is not a de Polignac number, because 26263031421 - 2⁶ = 26263031357 is a prime.

It is a super-4 number, since 4×26263031421⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26263031429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253431 + ... + 341691.

It is an arithmetic number, because the mean of its divisors is an integer number (1220133888).

Almost surely, 2^26263031421 is an apocalyptic number.

It is an amenable number.

26263031421 is a deficient number, since it is larger than the sum of its proper divisors (12781252995).

26263031421 is a wasteful number, since it uses less digits than its factorization.

26263031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88473.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 26263031421 its reverse (12413036262), we get a palindrome (38676067683).

The spelling of 26263031421 in words is "twenty-six billion, two hundred sixty-three million, thirty-one thousand, four hundred twenty-one".