1640553755168 has 24 divisors (see below), whose sum is σ = 3230792893440. Its totient is φ = 820034925120.

The previous prime is 1640553755131. The next prime is 1640553755179. The reversal of 1640553755168 is 8615573550461.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7450808 + ... + 7667831.

It is an arithmetic number, because the mean of its divisors is an integer number (134616370560).

Almost surely, 2^{1640553755168} is an apocalyptic number.

It is an amenable number.

1640553755168 is a deficient number, since it is larger than the sum of its proper divisors (1590239138272).

1640553755168 is a wasteful number, since it uses less digits than its factorization.

1640553755168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15122040 (or 15122032 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 56.

The spelling of 1640553755168 in words is "one trillion, six hundred forty billion, five hundred fifty-three million, seven hundred fifty-five thousand, one hundred sixty-eight".