1648643663252 has 12 divisors (see below), whose sum is σ = 2885144729376. Its totient is φ = 824316597720.

The previous prime is 1648643663237. The next prime is 1648643663257. The reversal of 1648643663252 is 2523663468461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648643663257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551024 + ... + 1897607.

It is an arithmetic number, because the mean of its divisors is an integer number (240428727448).

Almost surely, 2^{1648643663252} is an apocalyptic number.

It is an amenable number.

1648643663252 is a deficient number, since it is larger than the sum of its proper divisors (1236501066124).

1648643663252 is a wasteful number, since it uses less digits than its factorization.

1648643663252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616958 (or 2616956 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 56.

The spelling of 1648643663252 in words is "one trillion, six hundred forty-eight billion, six hundred forty-three million, six hundred sixty-three thousand, two hundred fifty-two".