53310065641621 has 4 divisors (see below), whose sum is σ = 56445951855852. Its totient is φ = 50174179427392.

The previous prime is 53310065641607. The next prime is 53310065641661. The reversal of 53310065641621 is 12614656001335.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41986369536721 + 11323696104900 = 6479689^2 + 3365070^2 .

It is a cyclic number.

It is not a de Polignac number, because 53310065641621 - 2⁵ = 53310065641589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53310065641661) 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, 1567943107090 + ... + 1567943107123.

It is an arithmetic number, because the mean of its divisors is an integer number (14111487963963).

Almost surely, 2^{53310065641621} is an apocalyptic number.

It is an amenable number.

53310065641621 is a deficient number, since it is larger than the sum of its proper divisors (3135886214231).

53310065641621 is a wasteful number, since it uses less digits than its factorization.

53310065641621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135886214230.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 53310065641621 in words is "fifty-three trillion, three hundred ten billion, sixty-five million, six hundred forty-one thousand, six hundred twenty-one".