64354231032 has 256 divisors, whose sum is σ = 204203704320. Its totient is φ = 16448140800.

The previous prime is 64354231021. The next prime is 64354231049. The reversal of 64354231032 is 23013245346.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64354230984 and 64354231002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12299857 + ... + 12305087.

It is an arithmetic number, because the mean of its divisors is an integer number (797670720).

Almost surely, 2^64354231032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64354231032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102101852160).

64354231032 is an abundant number, since it is smaller than the sum of its proper divisors (139849473288).

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

64354231032 is a wasteful number, since it uses less digits than its factorization.

64354231032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434 (or 5430 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 64354231032 its reverse (23013245346), we get a palindrome (87367476378).

The spelling of 64354231032 in words is "sixty-four billion, three hundred fifty-four million, two hundred thirty-one thousand, thirty-two".