64561006452 has 24 divisors (see below), whose sum is σ = 158570893600. Its totient is φ = 20387686176.

The previous prime is 64561006423. The next prime is 64561006453. The reversal of 64561006452 is 25460016546.

It is a self number, because there is not a number n which added to its sum of digits gives 64561006452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64561006453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141580927 + ... + 141581382.

Almost surely, 2^64561006452 is an apocalyptic number.

It is an amenable number.

64561006452 is an abundant number, since it is smaller than the sum of its proper divisors (94009887148).

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

64561006452 is a wasteful number, since it uses less digits than its factorization.

64561006452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283162335 (or 283162333 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 64561006452 in words is "sixty-four billion, five hundred sixty-one million, six thousand, four hundred fifty-two".