64459497375 has 384 divisors, whose sum is σ = 155542732800. Its totient is φ = 24914304000.

The previous prime is 64459497373. The next prime is 64459497419. The reversal of 64459497375 is 57379495446.

64459497375 is a `hidden beast` number, since 6 + 4 + 4 + 594 + 9 + 7 + 37 + 5 = 666.

It is not a de Polignac number, because 64459497375 - 2¹ = 64459497373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64459497373) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 60298341 + ... + 60299409.

It is an arithmetic number, because the mean of its divisors is an integer number (405059200).

Almost surely, 2^64459497375 is an apocalyptic number.

64459497375 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64459497375 is an abundant number, since it is smaller than the sum of its proper divisors (91083235425).

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

64459497375 is a wasteful number, since it uses less digits than its factorization.

64459497375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1147 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 63.

The spelling of 64459497375 in words is "sixty-four billion, four hundred fifty-nine million, four hundred ninety-seven thousand, three hundred seventy-five".