26105210802 has 24 divisors (see below), whose sum is σ = 61703226000. Its totient is φ = 7910669880.

The previous prime is 26105210801. The next prime is 26105210809. The reversal of 26105210802 is 20801250162.

It is a happy number.

26105210802 is a `hidden beast` number, since 2 + 61 + 0 + 521 + 0 + 80 + 2 = 666.

It is a super-4 number, since 4×26105210802⁴ (a number of 43 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (26105210801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65922052 + ... + 65922447.

It is an arithmetic number, because the mean of its divisors is an integer number (2570967750).

Almost surely, 2^26105210802 is an apocalyptic number.

26105210802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26105210802 is an abundant number, since it is smaller than the sum of its proper divisors (35598015198).

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

26105210802 is a wasteful number, since it uses less digits than its factorization.

26105210802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131844518 (or 131844515 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 26105210802 its reverse (20801250162), we get a palindrome (46906460964).

The spelling of 26105210802 in words is "twenty-six billion, one hundred five million, two hundred ten thousand, eight hundred two".