64453020000 has 240 divisors, whose sum is σ = 212989159152. Its totient is φ = 17059840000.

The previous prime is 64453019993. The next prime is 64453020007. The reversal of 64453020000 is 2035446.

It is an interprime number because it is at equal distance from previous prime (64453019993) and next prime (64453020007).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64453020007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8216080 + ... + 8223920.

Almost surely, 2^64453020000 is an apocalyptic number.

64453020000 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 64453020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106494579576).

64453020000 is an abundant number, since it is smaller than the sum of its proper divisors (148536139152).

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

64453020000 is a wasteful number, since it uses less digits than its factorization.

64453020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8011 (or 7988 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 64453020000 its reverse (2035446), we get a palindrome (64455055446).

The spelling of 64453020000 in words is "sixty-four billion, four hundred fifty-three million, twenty thousand".