26553775140 has 72 divisors (see below), whose sum is σ = 80991558648. Its totient is φ = 7041876480.

The previous prime is 26553775069. The next prime is 26553775159. The reversal of 26553775140 is 4157735562.

It is a happy number.

26553775140 is a `hidden beast` number, since 2 + 6 + 5 + 537 + 75 + 1 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 712569636 + 25841205504 = 26694^2 + 160752^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 374937 + ... + 440096.

It is an arithmetic number, because the mean of its divisors is an integer number (1124882759).

Almost surely, 2^26553775140 is an apocalyptic number.

26553775140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26553775140 is an abundant number, since it is smaller than the sum of its proper divisors (54437783508).

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

26553775140 is a wasteful number, since it uses less digits than its factorization.

26553775140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815229 (or 815224 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The spelling of 26553775140 in words is "twenty-six billion, five hundred fifty-three million, seven hundred seventy-five thousand, one hundred forty".