264404242504549 has 8 divisors (see below), whose sum is σ = 302189583784320. Its totient is φ = 226622227883856.

The previous prime is 264404242504433. The next prime is 264404242504561. The reversal of 264404242504549 is 945405242404462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 264404242504549 - 2²¹ = 264404240407397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264404242504549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264404242504349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831494449 + ... + 831812374.

It is an arithmetic number, because the mean of its divisors is an integer number (37773697973040).

Almost surely, 2^{264404242504549} is an apocalyptic number.

It is an amenable number.

264404242504549 is a deficient number, since it is larger than the sum of its proper divisors (37785341279771).

264404242504549 is a wasteful number, since it uses less digits than its factorization.

264404242504549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663329539.

The product of its (nonzero) digits is 44236800, while the sum is 55.

The spelling of 264404242504549 in words is "two hundred sixty-four trillion, four hundred four billion, two hundred forty-two million, five hundred four thousand, five hundred forty-nine".