1640063755653 has 12 divisors (see below), whose sum is σ = 2285961582240. Its totient is φ = 1045837756216.

The previous prime is 1640063755651. The next prime is 1640063755691. The reversal of 1640063755653 is 3565573600461.

It is not a de Polignac number, because 1640063755653 - 2¹ = 1640063755651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1640063755596 and 1640063755605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640063755651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516716673 + ... + 516719846.

It is an arithmetic number, because the mean of its divisors is an integer number (190496798520).

Almost surely, 2^{1640063755653} is an apocalyptic number.

It is an amenable number.

1640063755653 is a deficient number, since it is larger than the sum of its proper divisors (645897826587).

1640063755653 is a wasteful number, since it uses less digits than its factorization.

1640063755653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033436568 (or 1033436545 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 51.

The spelling of 1640063755653 in words is "one trillion, six hundred forty billion, sixty-three million, seven hundred fifty-five thousand, six hundred fifty-three".