1640246653325 has 96 divisors (see below), whose sum is σ = 2435244134400. Its totient is φ = 1072194036480.

The previous prime is 1640246653321. The next prime is 1640246653399. The reversal of 1640246653325 is 5233566420461.

It is not a de Polignac number, because 1640246653325 - 2² = 1640246653321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1640246653325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640246653321) 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 95 ways as a sum of consecutive naturals, for example, 166703756 + ... + 166713594.

It is an arithmetic number, because the mean of its divisors is an integer number (25367126400).

Almost surely, 2^{1640246653325} is an apocalyptic number.

It is an amenable number.

1640246653325 is a deficient number, since it is larger than the sum of its proper divisors (794997481075).

1640246653325 is a wasteful number, since it uses less digits than its factorization.

1640246653325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10299 (or 10294 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 1640246653325 in words is "one trillion, six hundred forty billion, two hundred forty-six million, six hundred fifty-three thousand, three hundred twenty-five".