26696222192640 has 2816 divisors, whose sum is σ = 118869473673216. Its totient is φ = 4934703513600.

The previous prime is 26696222192617. The next prime is 26696222192657. The reversal of 26696222192640 is 4629122269662.

It is a tau number, because it is divible by the number of its divisors (2816).

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 255 ways as a sum of consecutive naturals, for example, 95004349300 + ... + 95004349580.

Almost surely, 2^{26696222192640} is an apocalyptic number.

26696222192640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26696222192640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59434736836608).

26696222192640 is an abundant number, since it is smaller than the sum of its proper divisors (92173251480576).

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

26696222192640 is a wasteful number, since it uses less digits than its factorization.

26696222192640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 57.

It can be divided in two parts, 26696222 and 192640, that added together give a palindrome (26888862).

The spelling of 26696222192640 in words is "twenty-six trillion, six hundred ninety-six billion, two hundred twenty-two million, one hundred ninety-two thousand, six hundred forty".