64223431452 has 36 divisors (see below), whose sum is σ = 162451434600. Its totient is φ = 21393453792.

The previous prime is 64223431451. The next prime is 64223431471. The reversal of 64223431452 is 25413432246.

64223431452 is a `hidden beast` number, since 64 + 2 + 234 + 314 + 52 = 666.

64223431452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×64223431452³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64223431451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543702 + ... + 651197.

It is an arithmetic number, because the mean of its divisors is an integer number (4512539850).

Almost surely, 2^64223431452 is an apocalyptic number.

It is an amenable number.

64223431452 is an abundant number, since it is smaller than the sum of its proper divisors (98228003148).

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

64223431452 is a wasteful number, since it uses less digits than its factorization.

64223431452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196402 (or 1196397 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 64223431452 its reverse (25413432246), we get a palindrome (89636863698).

The spelling of 64223431452 in words is "sixty-four billion, two hundred twenty-three million, four hundred thirty-one thousand, four hundred fifty-two".