26154562020540 has 24 divisors (see below), whose sum is σ = 73232773657680. Its totient is φ = 6974549872128.

The previous prime is 26154562020473. The next prime is 26154562020569. The reversal of 26154562020540 is 4502026545162.

It is a happy number.

It is a super-2 number, since 2×26154562020540² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26154562020492 and 26154562020501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217954683445 + ... + 217954683564.

It is an arithmetic number, because the mean of its divisors is an integer number (3051365569070).

Almost surely, 2^{26154562020540} is an apocalyptic number.

26154562020540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26154562020540 is an abundant number, since it is smaller than the sum of its proper divisors (47078211637140).

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

26154562020540 is a wasteful number, since it uses less digits than its factorization.

26154562020540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435909367021 (or 435909367019 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 26154562020540 in words is "twenty-six trillion, one hundred fifty-four billion, five hundred sixty-two million, twenty thousand, five hundred forty".