26553985020 has 36 divisors (see below), whose sum is σ = 80547088440. Its totient is φ = 7081062624.

The previous prime is 26553985009. The next prime is 26553985061. The reversal of 26553985020 is 2058935562.

26553985020 is a `hidden beast` number, since 2 + 6 + 5 + 53 + 98 + 502 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×26553985020² (a number of 22 digits) contains 22 as substring.

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

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 11 ways as a sum of consecutive naturals, for example, 73760890 + ... + 73761249.

Almost surely, 2^26553985020 is an apocalyptic number.

26553985020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26553985020 is an abundant number, since it is smaller than the sum of its proper divisors (53993103420).

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

26553985020 is a wasteful number, since it uses less digits than its factorization.

26553985020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147522154 (or 147522149 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 26553985020 in words is "twenty-six billion, five hundred fifty-three million, nine hundred eighty-five thousand, twenty".