264748787421 has 16 divisors (see below), whose sum is σ = 362553744000. Its totient is φ = 171721902528.

The previous prime is 264748787383. The next prime is 264748787447. The reversal of 264748787421 is 124787847462.

It is a happy number.

It is not a de Polignac number, because 264748787421 - 2⁹ = 264748786909 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264748787461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5141320 + ... + 5192558.

It is an arithmetic number, because the mean of its divisors is an integer number (22659609000).

Almost surely, 2^264748787421 is an apocalyptic number.

It is an amenable number.

264748787421 is a deficient number, since it is larger than the sum of its proper divisors (97804956579).

264748787421 is a wasteful number, since it uses less digits than its factorization.

264748787421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97828.

The product of its digits is 33718272, while the sum is 60.

The spelling of 264748787421 in words is "two hundred sixty-four billion, seven hundred forty-eight million, seven hundred eighty-seven thousand, four hundred twenty-one".