26002240020 has 36 divisors (see below), whose sum is σ = 78873461940. Its totient is φ = 6933930624.

The previous prime is 26002240009. The next prime is 26002240039. The reversal of 26002240020 is 2004220062.

It is a happy number.

26002240020 is a `hidden beast` number, since 2 + 600 + 2 + 2 + 40 + 0 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16270022916 + 9732217104 = 127554^2 + 98652^2 .

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

It is a super-2 number, since 2×26002240020² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 26002239975 and 26002240002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72228265 + ... + 72228624.

Almost surely, 2^26002240020 is an apocalyptic number.

26002240020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26002240020 is an abundant number, since it is smaller than the sum of its proper divisors (52871221920).

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

26002240020 is a wasteful number, since it uses less digits than its factorization.

26002240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144456904 (or 144456899 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 26002240020 its reverse (2004220062), we get a palindrome (28006460082).

The spelling of 26002240020 in words is "twenty-six billion, two million, two hundred forty thousand, twenty".