26638642102854 has 32 divisors (see below), whose sum is σ = 53361183649536. Its totient is φ = 8865564929120.

The previous prime is 26638642102847. The next prime is 26638642102861. The reversal of 26638642102854 is 45820124683662.

It is an interprime number because it is at equal distance from previous prime (26638642102847) and next prime (26638642102861).

It is a super-2 number, since 2×26638642102854² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26638642102794 and 26638642102803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170834884 + ... + 170990744.

It is an arithmetic number, because the mean of its divisors is an integer number (1667536989048).

Almost surely, 2^{26638642102854} is an apocalyptic number.

26638642102854 is an abundant number, since it is smaller than the sum of its proper divisors (26722541546682).

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

26638642102854 is a wasteful number, since it uses less digits than its factorization.

26638642102854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200540.

The product of its (nonzero) digits is 26542080, while the sum is 57.

The spelling of 26638642102854 in words is "twenty-six trillion, six hundred thirty-eight billion, six hundred forty-two million, one hundred two thousand, eight hundred fifty-four".