64533200340 has 96 divisors (see below), whose sum is σ = 213167775744. Its totient is φ = 14274622080.

The previous prime is 64533200317. The next prime is 64533200341. The reversal of 64533200340 is 4300233546.

It is a super-2 number, since 2×64533200340² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 64533200298 and 64533200307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64533200341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2465214 + ... + 2491253.

It is an arithmetic number, because the mean of its divisors is an integer number (2220497664).

Almost surely, 2^64533200340 is an apocalyptic number.

64533200340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64533200340 is an abundant number, since it is smaller than the sum of its proper divisors (148634575404).

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

64533200340 is a wasteful number, since it uses less digits than its factorization.

64533200340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956517 (or 4956515 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 64533200340 its reverse (4300233546), we get a palindrome (68833433886).

The spelling of 64533200340 in words is "sixty-four billion, five hundred thirty-three million, two hundred thousand, three hundred forty".