653438161834356 has 24 divisors (see below), whose sum is σ = 1565896856288800. Its totient is φ = 211925890324512.

The previous prime is 653438161834351. The next prime is 653438161834477.

It is a happy number.

653438161834356 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653438161834351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735853785406 + ... + 735853786293.

Almost surely, 2^{653438161834356} is an apocalyptic number.

It is an amenable number.

653438161834356 is an abundant number, since it is smaller than the sum of its proper divisors (912458694454444).

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

653438161834356 is a wasteful number, since it uses less digits than its factorization.

653438161834356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471707571743 (or 1471707571741 counting only the distinct ones).

The product of its digits is 447897600, while the sum is 66.

The spelling of 653438161834356 in words is "six hundred fifty-three trillion, four hundred thirty-eight billion, one hundred sixty-one million, eight hundred thirty-four thousand, three hundred fifty-six".