26180389545856 has 128 divisors (see below), whose sum is σ = 64195011034560. Its totient is φ = 10356639989760.

The previous prime is 26180389545839. The next prime is 26180389545881. The reversal of 26180389545856 is 65854598308162.

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

It is a super-2 number, since 2×26180389545856² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532952976 + ... + 533002096.

Almost surely, 2^{26180389545856} is an apocalyptic number.

26180389545856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26180389545856 is an abundant number, since it is smaller than the sum of its proper divisors (38014621488704).

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

26180389545856 is a wasteful number, since it uses less digits than its factorization.

26180389545856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94912 (or 94900 counting only the distinct ones).

The product of its (nonzero) digits is 497664000, while the sum is 70.

The spelling of 26180389545856 in words is "twenty-six trillion, one hundred eighty billion, three hundred eighty-nine million, five hundred forty-five thousand, eight hundred fifty-six".