321432666232560 has 160 divisors (see below), whose sum is σ = 1000121247810048. Its totient is φ = 85398916377600.

The previous prime is 321432666232547. The next prime is 321432666232591. The reversal of 321432666232560 is 65232666234123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 430443510 + ... + 431189610.

Almost surely, 2^{321432666232560} is an apocalyptic number.

321432666232560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321432666232560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500060623905024).

321432666232560 is an abundant number, since it is smaller than the sum of its proper divisors (678688581577488).

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

321432666232560 is a wasteful number, since it uses less digits than its factorization.

321432666232560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752743 (or 752737 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 51.

The spelling of 321432666232560 in words is "three hundred twenty-one trillion, four hundred thirty-two billion, six hundred sixty-six million, two hundred thirty-two thousand, five hundred sixty".