1653796643632 has 80 divisors (see below), whose sum is σ = 3691621752832. Its totient is φ = 703035002880.

The previous prime is 1653796643627. The next prime is 1653796643651. The reversal of 1653796643632 is 2363466973561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84665707 + ... + 84685237.

Almost surely, 2^{1653796643632} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1653796643632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1845810876416).

1653796643632 is an abundant number, since it is smaller than the sum of its proper divisors (2037825109200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1653796643632 is a wasteful number, since it uses less digits than its factorization.

1653796643632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25626 (or 25620 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 61.

The spelling of 1653796643632 in words is "one trillion, six hundred fifty-three billion, seven hundred ninety-six million, six hundred forty-three thousand, six hundred thirty-two".