64323144012 has 48 divisors (see below), whose sum is σ = 153136240992. Its totient is φ = 21009868800.

The previous prime is 64323143993. The next prime is 64323144029. The reversal of 64323144012 is 21044132346.

It is a super-2 number, since 2×64323144012² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156003 + ... + 391130.

It is an arithmetic number, because the mean of its divisors is an integer number (3190338354).

Almost surely, 2^64323144012 is an apocalyptic number.

It is an amenable number.

64323144012 is an abundant number, since it is smaller than the sum of its proper divisors (88813096980).

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

64323144012 is a wasteful number, since it uses less digits than its factorization.

64323144012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547338 (or 547336 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 64323144012 its reverse (21044132346), we get a palindrome (85367276358).

It can be divided in two parts, 64323 and 144012, that added together give a triangular number (208335 = T₆₄₅).

The spelling of 64323144012 in words is "sixty-four billion, three hundred twenty-three million, one hundred forty-four thousand, twelve".