64151216423240 has 32 divisors (see below), whose sum is σ = 144377993047680. Its totient is φ = 25653774374592.

The previous prime is 64151216423191. The next prime is 64151216423279. The reversal of 64151216423240 is 4232461215146.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209601254 + ... + 209907093.

It is an arithmetic number, because the mean of its divisors is an integer number (4511812282740).

Almost surely, 2^{64151216423240} is an apocalyptic number.

It is an amenable number.

64151216423240 is an abundant number, since it is smaller than the sum of its proper divisors (80226776624440).

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

64151216423240 is a wasteful number, since it uses less digits than its factorization.

64151216423240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419512181 (or 419512177 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

Adding to 64151216423240 its reverse (4232461215146), we get a palindrome (68383677638386).

The spelling of 64151216423240 in words is "sixty-four trillion, one hundred fifty-one billion, two hundred sixteen million, four hundred twenty-three thousand, two hundred forty".