26086193640 has 256 divisors, whose sum is σ = 98572320000. Its totient is φ = 6083195904.

The previous prime is 26086193603. The next prime is 26086193641. The reversal of 26086193640 is 4639168062.

26086193640 is a `hidden beast` number, since 2 + 608 + 6 + 1 + 9 + 36 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (26086193641) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 217866 + ... + 315654.

It is an arithmetic number, because the mean of its divisors is an integer number (385048125).

Almost surely, 2^26086193640 is an apocalyptic number.

26086193640 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 26086193640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49286160000).

26086193640 is an abundant number, since it is smaller than the sum of its proper divisors (72486126360).

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

26086193640 is a wasteful number, since it uses less digits than its factorization.

26086193640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97841 (or 97831 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 26086193640 in words is "twenty-six billion, eighty-six million, one hundred ninety-three thousand, six hundred forty".