64325621650552 has 32 divisors (see below), whose sum is σ = 120631566182400. Its totient is φ = 32157204544224.

The previous prime is 64325621650487. The next prime is 64325621650561. The reversal of 64325621650552 is 25505612652346.

It is a self number, because there is not a number n which added to its sum of digits gives 64325621650552.

It is a congruent number.

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, 2140818393 + ... + 2140848439.

It is an arithmetic number, because the mean of its divisors is an integer number (3769736443200).

Almost surely, 2^{64325621650552} is an apocalyptic number.

It is an amenable number.

64325621650552 is a deficient number, since it is larger than the sum of its proper divisors (56305944531848).

64325621650552 is a wasteful number, since it uses less digits than its factorization.

64325621650552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67795 (or 67791 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 64325621650552 in words is "sixty-four trillion, three hundred twenty-five billion, six hundred twenty-one million, six hundred fifty thousand, five hundred fifty-two".