26131989186980 has 24 divisors (see below), whose sum is σ = 55079676113280. Its totient is φ = 10414224470880.

The previous prime is 26131989186971. The next prime is 26131989186991. The reversal of 26131989186980 is 8968198913162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2410694690 + ... + 2410705529.

It is an arithmetic number, because the mean of its divisors is an integer number (2294986504720).

Almost surely, 2^{26131989186980} is an apocalyptic number.

26131989186980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26131989186980 is an abundant number, since it is smaller than the sum of its proper divisors (28947686926300).

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

26131989186980 is a wasteful number, since it uses less digits than its factorization.

26131989186980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821400499 (or 4821400497 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 71.

The spelling of 26131989186980 in words is "twenty-six trillion, one hundred thirty-one billion, nine hundred eighty-nine million, one hundred eighty-six thousand, nine hundred eighty".