26540454402 has 96 divisors (see below), whose sum is σ = 71809680384. Its totient is φ = 6882472800.

The previous prime is 26540454379. The next prime is 26540454403. The reversal of 26540454402 is 20445404562.

26540454402 is a `hidden beast` number, since 26 + 540 + 4 + 54 + 40 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (26540454403) 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 47 ways as a sum of consecutive naturals, for example, 859393 + ... + 889739.

It is an arithmetic number, because the mean of its divisors is an integer number (748017504).

Almost surely, 2^26540454402 is an apocalyptic number.

26540454402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26540454402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35904840192).

26540454402 is an abundant number, since it is smaller than the sum of its proper divisors (45269225982).

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

26540454402 is a wasteful number, since it uses less digits than its factorization.

26540454402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31004 (or 31001 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 26540454402 its reverse (20445404562), we get a palindrome (46985858964).

The spelling of 26540454402 in words is "twenty-six billion, five hundred forty million, four hundred fifty-four thousand, four hundred two".