26181773952 has 128 divisors (see below), whose sum is σ = 71437470720. Its totient is φ = 8491392000.

The previous prime is 26181773941. The next prime is 26181773971. The reversal of 26181773952 is 25937718162.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×26181773952³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26181773895 and 26181773904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4471827 + ... + 4477677.

It is an arithmetic number, because the mean of its divisors is an integer number (558105240).

Almost surely, 2^26181773952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26181773952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35718735360).

26181773952 is an abundant number, since it is smaller than the sum of its proper divisors (45255696768).

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

26181773952 is a wasteful number, since it uses less digits than its factorization.

26181773952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182 (or 6170 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The spelling of 26181773952 in words is "twenty-six billion, one hundred eighty-one million, seven hundred seventy-three thousand, nine hundred fifty-two".