26401234506 has 16 divisors (see below), whose sum is σ = 54505774848. Its totient is φ = 8516527200.

The previous prime is 26401234501. The next prime is 26401234507. The reversal of 26401234506 is 60543210462.

It is not an unprimeable number, because it can be changed into a prime (26401234501) 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, 70970875 + ... + 70971246.

It is an arithmetic number, because the mean of its divisors is an integer number (3406610928).

Almost surely, 2^26401234506 is an apocalyptic number.

26401234506 is an abundant number, since it is smaller than the sum of its proper divisors (28104540342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26401234506 is a wasteful number, since it uses less digits than its factorization.

26401234506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141942157.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 26401234506 its reverse (60543210462), we get a palindrome (86944444968).

The spelling of 26401234506 in words is "twenty-six billion, four hundred one million, two hundred thirty-four thousand, five hundred six".