26540330454 has 96 divisors (see below), whose sum is σ = 66207697920. Its totient is φ = 7871315760.

The previous prime is 26540330447. The next prime is 26540330471. The reversal of 26540330454 is 45403304562.

26540330454 is a `hidden beast` number, since 265 + 40 + 3 + 304 + 54 = 666.

It is a super-2 number, since 2×26540330454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 263887 + ... + 350309.

It is an arithmetic number, because the mean of its divisors is an integer number (689663520).

Almost surely, 2^26540330454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26540330454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33103848960).

26540330454 is an abundant number, since it is smaller than the sum of its proper divisors (39667367466).

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

26540330454 is a wasteful number, since it uses less digits than its factorization.

26540330454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86503 (or 86486 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

It can be divided in two parts, 2 and 6540330454, that added together give a palindrome (6540330456).

The spelling of 26540330454 in words is "twenty-six billion, five hundred forty million, three hundred thirty thousand, four hundred fifty-four".