26640488404662 has 64 divisors (see below), whose sum is σ = 59702605113600. Its totient is φ = 7853772977280.

The previous prime is 26640488404657. The next prime is 26640488404693.

26640488404662 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 26640488404596 and 26640488404605.

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 31 ways as a sum of consecutive naturals, for example, 20439889 + ... + 21704147.

It is an arithmetic number, because the mean of its divisors is an integer number (932853204900).

Almost surely, 2^{26640488404662} is an apocalyptic number.

26640488404662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26640488404662 is an abundant number, since it is smaller than the sum of its proper divisors (33062116708938).

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

26640488404662 is a wasteful number, since it uses less digits than its factorization.

26640488404662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272941.

The product of its (nonzero) digits is 84934656, while the sum is 60.

The spelling of 26640488404662 in words is "twenty-six trillion, six hundred forty billion, four hundred eighty-eight million, four hundred four thousand, six hundred sixty-two".