64015641244 has 48 divisors (see below), whose sum is σ = 120477656320. Its totient is φ = 29672438400.

The previous prime is 64015641241. The next prime is 64015641257. The reversal of 64015641244 is 44214651046.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64015641241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727264 + ... + 810520.

Almost surely, 2^64015641244 is an apocalyptic number.

It is an amenable number.

64015641244 is a deficient number, since it is larger than the sum of its proper divisors (56462015076).

64015641244 is a wasteful number, since it uses less digits than its factorization.

64015641244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83498 (or 83496 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 64015641244 in words is "sixty-four billion, fifteen million, six hundred forty-one thousand, two hundred forty-four".