64323251447140 has 48 divisors (see below), whose sum is σ = 154419205231872. Its totient is φ = 22047485959296.

The previous prime is 64323251447047. The next prime is 64323251447197. The reversal of 64323251447140 is 4174415232346.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64086192 + ... + 65082151.

It is an arithmetic number, because the mean of its divisors is an integer number (3217066775664).

Almost surely, 2^{64323251447140} is an apocalyptic number.

It is an amenable number.

64323251447140 is an abundant number, since it is smaller than the sum of its proper divisors (90095953784732).

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

64323251447140 is a wasteful number, since it uses less digits than its factorization.

64323251447140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129171916 (or 129171914 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 46.

Adding to 64323251447140 its reverse (4174415232346), we get a palindrome (68497666679486).

The spelling of 64323251447140 in words is "sixty-four trillion, three hundred twenty-three billion, two hundred fifty-one million, four hundred forty-seven thousand, one hundred forty".