26391187152 has 160 divisors (see below), whose sum is σ = 82814699520. Its totient is φ = 7980336000.

The previous prime is 26391187139. The next prime is 26391187157. The reversal of 26391187152 is 25178119362.

26391187152 is a `hidden beast` number, since 2 + 639 + 1 + 1 + 8 + 7 + 1 + 5 + 2 = 666.

It is a super-2 number, since 2×26391187152² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26391187098 and 26391187107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26391187157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2327577 + ... + 2338887.

It is an arithmetic number, because the mean of its divisors is an integer number (517591872).

Almost surely, 2^26391187152 is an apocalyptic number.

26391187152 is a gapful number since it is divisible by the number (22) 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 26391187152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41407349760).

26391187152 is an abundant number, since it is smaller than the sum of its proper divisors (56423512368).

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

26391187152 is a wasteful number, since it uses less digits than its factorization.

26391187152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830 (or 11818 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The spelling of 26391187152 in words is "twenty-six billion, three hundred ninety-one million, one hundred eighty-seven thousand, one hundred fifty-two".