64430121763231 has 16 divisors (see below), whose sum is σ = 78132812150016. Its totient is φ = 51865940739456.

The previous prime is 64430121763223. The next prime is 64430121763237. The reversal of 64430121763231 is 13236712103446.

64430121763231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64430121763231 - 2³ = 64430121763223 is a prime.

It is a super-2 number, since 2×64430121763231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64430121763237) 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, 579633501 + ... + 579744646.

It is an arithmetic number, because the mean of its divisors is an integer number (4883300759376).

Almost surely, 2^{64430121763231} is an apocalyptic number.

64430121763231 is a deficient number, since it is larger than the sum of its proper divisors (13702690386785).

64430121763231 is a wasteful number, since it uses less digits than its factorization.

64430121763231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159378638.

The product of its (nonzero) digits is 435456, while the sum is 43.

Adding to 64430121763231 its reverse (13236712103446), we get a palindrome (77666833866677).

The spelling of 64430121763231 in words is "sixty-four trillion, four hundred thirty billion, one hundred twenty-one million, seven hundred sixty-three thousand, two hundred thirty-one".