26139909102800 has 30 divisors (see below), whose sum is σ = 62801131620438. Its totient is φ = 10455963640960.

The previous prime is 26139909102743. The next prime is 26139909102803. The reversal of 26139909102800 is 820190993162.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6947589245584 + 19192319857216 = 2635828^2 + 4380904^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26139909102803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32674885979 + ... + 32674886778.

Almost surely, 2^{26139909102800} is an apocalyptic number.

26139909102800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26139909102800 is an abundant number, since it is smaller than the sum of its proper divisors (36661222517638).

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

26139909102800 is a wasteful number, since it uses less digits than its factorization.

26139909102800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65349772775 (or 65349772764 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 26139909102800 in words is "twenty-six trillion, one hundred thirty-nine billion, nine hundred nine million, one hundred two thousand, eight hundred".