1680238640053 has 4 divisors (see below), whose sum is σ = 1715988398400. Its totient is φ = 1644488881708.

The previous prime is 1680238640033. The next prime is 1680238640063. The reversal of 1680238640053 is 3500468320861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1680238640053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1680238639985 and 1680238640012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680238640023) by changing a digit.

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, 17874879103 + ... + 17874879196.

It is an arithmetic number, because the mean of its divisors is an integer number (428997099600).

Almost surely, 2^{1680238640053} is an apocalyptic number.

It is an amenable number.

1680238640053 is a deficient number, since it is larger than the sum of its proper divisors (35749758347).

1680238640053 is an equidigital number, since it uses as much as digits as its factorization.

1680238640053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35749758346.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 1680238640053 in words is "one trillion, six hundred eighty billion, two hundred thirty-eight million, six hundred forty thousand, fifty-three".