26481914421664 has 48 divisors (see below), whose sum is σ = 58082846146920. Its totient is φ = 11800959206400.

The previous prime is 26481914421661. The next prime is 26481914421749. The reversal of 26481914421664 is 46612441918462.

It can be written as a sum of positive squares in 4 ways, for example, as 19755713667600 + 6726200754064 = 4444740^2 + 2593492^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a junction number, because it is equal to n+sod(n) for n = 26481914421599 and 26481914421608.

It is not an unprimeable number, because it can be changed into a prime (26481914421661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097547387 + ... + 1097571514.

Almost surely, 2^{26481914421664} is an apocalyptic number.

It is an amenable number.

26481914421664 is an abundant number, since it is smaller than the sum of its proper divisors (31600931725256).

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

26481914421664 is a wasteful number, since it uses less digits than its factorization.

26481914421664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195118953 (or 2195118945 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 58.

The spelling of 26481914421664 in words is "twenty-six trillion, four hundred eighty-one billion, nine hundred fourteen million, four hundred twenty-one thousand, six hundred sixty-four".