53213650663 has 4 divisors (see below), whose sum is σ = 53214857920. Its totient is φ = 53212443408.

The previous prime is 53213650657. The next prime is 53213650667. The reversal of 53213650663 is 36605631235.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53213650663 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 (53213650667) 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 3 ways as a sum of consecutive naturals, for example, 534903 + ... + 626536.

It is an arithmetic number, because the mean of its divisors is an integer number (13303714480).

Almost surely, 2^53213650663 is an apocalyptic number.

53213650663 is a deficient number, since it is larger than the sum of its proper divisors (1207257).

53213650663 is a wasteful number, since it uses less digits than its factorization.

53213650663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207256.

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 53213650663 in words is "fifty-three billion, two hundred thirteen million, six hundred fifty thousand, six hundred sixty-three".