64326012240 has 120 divisors (see below), whose sum is σ = 231967519200. Its totient is φ = 14703085824.

The previous prime is 64326012221. The next prime is 64326012259. The reversal of 64326012240 is 4221062346.

It is an interprime number because it is at equal distance from previous prime (64326012221) and next prime (64326012259).

It is a tau number, because it is divible by the number of its divisors (120).

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 = 64326012198 and 64326012207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2723190 + ... + 2746709.

It is an arithmetic number, because the mean of its divisors is an integer number (1933062660).

Almost surely, 2^64326012240 is an apocalyptic number.

64326012240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64326012240 is an abundant number, since it is smaller than the sum of its proper divisors (167641506960).

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

64326012240 is a wasteful number, since it uses less digits than its factorization.

64326012240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469929 (or 5469916 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 64326012240 its reverse (4221062346), we get a palindrome (68547074586).

The spelling of 64326012240 in words is "sixty-four billion, three hundred twenty-six million, twelve thousand, two hundred forty".