20343240366464 has 64 divisors (see below), whose sum is σ = 42084739453680. Its totient is φ = 9787592908800.

The previous prime is 20343240366457. The next prime is 20343240366487. The reversal of 20343240366464 is 46466304234302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26167442 + ... + 26933649.

Almost surely, 2^{20343240366464} is an apocalyptic number.

It is an amenable number.

20343240366464 is an abundant number, since it is smaller than the sum of its proper divisors (21741499087216).

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

20343240366464 is an equidigital number, since it uses as much as digits as its factorization.

20343240366464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53101219 (or 53101207 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 47.

The spelling of 20343240366464 in words is "twenty trillion, three hundred forty-three billion, two hundred forty million, three hundred sixty-six thousand, four hundred sixty-four".