26551775125980 has 432 divisors, whose sum is σ = 92639645148960. Its totient is φ = 6310430171136.

The previous prime is 26551775125921. The next prime is 26551775125987. The reversal of 26551775125980 is 8952157715562.

26551775125980 is a `hidden beast` number, since 2 + 6 + 5 + 517 + 7 + 5 + 1 + 25 + 98 + 0 = 666.

It is a super-2 number, since 2×26551775125980² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26551775125987) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 76576684 + ... + 76922636.

It is an arithmetic number, because the mean of its divisors is an integer number (214443623030).

Almost surely, 2^{26551775125980} is an apocalyptic number.

26551775125980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26551775125980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46319822574480).

26551775125980 is an abundant number, since it is smaller than the sum of its proper divisors (66087870022980).

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

26551775125980 is a wasteful number, since it uses less digits than its factorization.

26551775125980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346055 (or 346005 counting only the distinct ones).

The product of its (nonzero) digits is 52920000, while the sum is 63.

The spelling of 26551775125980 in words is "twenty-six trillion, five hundred fifty-one billion, seven hundred seventy-five million, one hundred twenty-five thousand, nine hundred eighty".