264219540479 has 4 divisors (see below), whose sum is σ = 265801693584. Its totient is φ = 262637387376.

The previous prime is 264219540451. The next prime is 264219540491. The reversal of 264219540479 is 974045912462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264219540479 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 264219540479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264219540499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791076302 + ... + 791076635.

It is an arithmetic number, because the mean of its divisors is an integer number (66450423396).

Almost surely, 2^264219540479 is an apocalyptic number.

264219540479 is a deficient number, since it is larger than the sum of its proper divisors (1582153105).

264219540479 is a wasteful number, since it uses less digits than its factorization.

264219540479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582153104.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 264219540479 in words is "two hundred sixty-four billion, two hundred nineteen million, five hundred forty thousand, four hundred seventy-nine".