26203420235421 has 24 divisors (see below), whose sum is σ = 44466410098656. Its totient is φ = 14659256075040.

The previous prime is 26203420235383. The next prime is 26203420235429. The reversal of 26203420235421 is 12453202430262.

26203420235421 is a `hidden beast` number, since 2 + 6 + 20 + 3 + 4 + 202 + 3 + 5 + 421 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-26203420235421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26203420235429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10180037655 + ... + 10180040228.

It is an arithmetic number, because the mean of its divisors is an integer number (1852767087444).

Almost surely, 2^{26203420235421} is an apocalyptic number.

It is an amenable number.

26203420235421 is a deficient number, since it is larger than the sum of its proper divisors (18262989863235).

26203420235421 is a wasteful number, since it uses less digits than its factorization.

26203420235421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20360077913 (or 20360077910 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 26203420235421 its reverse (12453202430262), we get a palindrome (38656622665683).

The spelling of 26203420235421 in words is "twenty-six trillion, two hundred three billion, four hundred twenty million, two hundred thirty-five thousand, four hundred twenty-one".