64632901802448 has 720 divisors, whose sum is σ = 210072443645952. Its totient is φ = 16770155212800.

The previous prime is 64632901802437. The next prime is 64632901802489. The reversal of 64632901802448 is 84420810923646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 40219602061 + ... + 40219603667.

Almost surely, 2^{64632901802448} is an apocalyptic number.

64632901802448 is a gapful number since it is divisible by the number (68) 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 64632901802448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105036221822976).

64632901802448 is an abundant number, since it is smaller than the sum of its proper divisors (145439541843504).

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

64632901802448 is a wasteful number, since it uses less digits than its factorization.

64632901802448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 64632901802448 in words is "sixty-four trillion, six hundred thirty-two billion, nine hundred one million, eight hundred two thousand, four hundred forty-eight".