64531436162044 has 12 divisors (see below), whose sum is σ = 112930311916800. Its totient is φ = 32265632757248.

The previous prime is 64531436162033. The next prime is 64531436162093. The reversal of 64531436162044 is 44026163413546.

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, 19613884 + ... + 22666435.

It is an arithmetic number, because the mean of its divisors is an integer number (9410859326400).

Almost surely, 2^{64531436162044} is an apocalyptic number.

It is an amenable number.

64531436162044 is a deficient number, since it is larger than the sum of its proper divisors (48398875754756).

64531436162044 is a wasteful number, since it uses less digits than its factorization.

64531436162044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42661892 (or 42661890 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 64531436162044 in words is "sixty-four trillion, five hundred thirty-one billion, four hundred thirty-six million, one hundred sixty-two thousand, forty-four".