64516681277248 has 112 divisors (see below), whose sum is σ = 136411879177728. Its totient is φ = 30223844352000.

The previous prime is 64516681277227. The next prime is 64516681277309. The reversal of 64516681277248 is 84277218661546.

It is a congruent number.

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, 7628836 + ... + 13683292.

It is an arithmetic number, because the mean of its divisors is an integer number (1217963206944).

Almost surely, 2^{64516681277248} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64516681277248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68205939588864).

64516681277248 is an abundant number, since it is smaller than the sum of its proper divisors (71895197900480).

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

64516681277248 is a wasteful number, since it uses less digits than its factorization.

64516681277248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054672 (or 6054662 counting only the distinct ones).

The product of its digits is 216760320, while the sum is 67.

The spelling of 64516681277248 in words is "sixty-four trillion, five hundred sixteen billion, six hundred eighty-one million, two hundred seventy-seven thousand, two hundred forty-eight".