26404146644 has 6 divisors (see below), whose sum is σ = 46207256634. Its totient is φ = 13202073320.

The previous prime is 26404146617. The next prime is 26404146653. The reversal of 26404146644 is 44664140462.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24731336644 + 1672810000 = 157262^2 + 40900^2 .

It is a super-3 number, since 3×26404146644³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300518327 + ... + 3300518334.

It is an arithmetic number, because the mean of its divisors is an integer number (7701209439).

Almost surely, 2^26404146644 is an apocalyptic number.

It is an amenable number.

26404146644 is a deficient number, since it is larger than the sum of its proper divisors (19803109990).

26404146644 is a wasteful number, since it uses less digits than its factorization.

26404146644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601036665 (or 6601036663 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 26404146644 in words is "twenty-six billion, four hundred four million, one hundred forty-six thousand, six hundred forty-four".