64554327420 has 192 divisors, whose sum is σ = 208890662400. Its totient is φ = 14730992640.

The previous prime is 64554327407. The next prime is 64554327421. The reversal of 64554327420 is 2472345546.

It is a super-3 number, since 3×64554327420³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64554327421) 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 63 ways as a sum of consecutive naturals, for example, 1952386 + ... + 1985174.

It is an arithmetic number, because the mean of its divisors is an integer number (1087972200).

Almost surely, 2^64554327420 is an apocalyptic number.

64554327420 is a gapful number since it is divisible by the number (60) 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 64554327420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104445331200).

64554327420 is an abundant number, since it is smaller than the sum of its proper divisors (144336334980).

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

64554327420 is a wasteful number, since it uses less digits than its factorization.

64554327420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32988 (or 32986 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 42.

The spelling of 64554327420 in words is "sixty-four billion, five hundred fifty-four million, three hundred twenty-seven thousand, four hundred twenty".