64276772244 has 12 divisors (see below), whose sum is σ = 149979135264. Its totient is φ = 21425590744.

The previous prime is 64276772237. The next prime is 64276772327. The reversal of 64276772244 is 44227767246.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678198832 + ... + 2678198855.

It is an arithmetic number, because the mean of its divisors is an integer number (12498261272).

Almost surely, 2^64276772244 is an apocalyptic number.

It is an amenable number.

64276772244 is an abundant number, since it is smaller than the sum of its proper divisors (85702363020).

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

64276772244 is a wasteful number, since it uses less digits than its factorization.

64276772244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356397694 (or 5356397692 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 51.

The spelling of 64276772244 in words is "sixty-four billion, two hundred seventy-six million, seven hundred seventy-two thousand, two hundred forty-four".