64800342617956 has 27 divisors (see below), whose sum is σ = 124647280692403. Its totient is φ = 29454620691320.

The previous prime is 64800342617903. The next prime is 64800342617987. The reversal of 64800342617956 is 65971624300846.

The square root of 64800342617956 is 8049866.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64800342617894 and 64800342617903.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 176914101 + ... + 177280003.

It is a 1-persistent number, because it is pandigital, but 2⋅64800342617956 = 129600685235912 is not.

Almost surely, 2^{64800342617956} is an apocalyptic number.

64800342617956 is the 8049866-th square number.

It is an amenable number.

64800342617956 is a deficient number, since it is larger than the sum of its proper divisors (59846938074447).

64800342617956 is an frugal number, since it uses more digits than its factorization.

64800342617956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731832 (or 365916 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 61.

The spelling of 64800342617956 in words is "sixty-four trillion, eight hundred billion, three hundred forty-two million, six hundred seventeen thousand, nine hundred fifty-six".