264404254203440 has 80 divisors (see below), whose sum is σ = 690811382616768. Its totient is φ = 93381569369088.

The previous prime is 264404254203437. The next prime is 264404254203443. The reversal of 264404254203440 is 44302452404462.

It is an interprime number because it is at equal distance from previous prime (264404254203437) and next prime (264404254203443).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 264404254203391 and 264404254203400.

It is not an unprimeable number, because it can be changed into a prime (264404254203443) by changing a digit.

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, 5526820859 + ... + 5526868698.

Almost surely, 2^{264404254203440} is an apocalyptic number.

264404254203440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264404254203440 is an abundant number, since it is smaller than the sum of its proper divisors (426407128413328).

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

264404254203440 is a wasteful number, since it uses less digits than its factorization.

264404254203440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11053689606 (or 11053689600 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 44.

The spelling of 264404254203440 in words is "two hundred sixty-four trillion, four hundred four billion, two hundred fifty-four million, two hundred three thousand, four hundred forty".