64446510492 has 360 divisors, whose sum is σ = 214559600640. Its totient is φ = 16714978560.

The previous prime is 64446510473. The next prime is 64446510493. The reversal of 64446510492 is 29401564446.

64446510492 is a `hidden beast` number, since 6 + 4 + 4 + 46 + 510 + 4 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64446510493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 12587109 + ... + 12592227.

Almost surely, 2^64446510492 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 64446510492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107279800320).

64446510492 is an abundant number, since it is smaller than the sum of its proper divisors (150113090148).

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

64446510492 is a wasteful number, since it uses less digits than its factorization.

64446510492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5223 (or 5205 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 64446510492 in words is "sixty-four billion, four hundred forty-six million, five hundred ten thousand, four hundred ninety-two".