53213532109 has 4 divisors (see below), whose sum is σ = 53222396704. Its totient is φ = 53204667516.

The previous prime is 53213532091. The next prime is 53213532133. The reversal of 53213532109 is 90123531235.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53213532109 - 2⁷ = 53213531981 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 (53213532179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4423287 + ... + 4435300.

It is an arithmetic number, because the mean of its divisors is an integer number (13305599176).

Almost surely, 2^53213532109 is an apocalyptic number.

It is an amenable number.

53213532109 is a deficient number, since it is larger than the sum of its proper divisors (8864595).

53213532109 is an equidigital number, since it uses as much as digits as its factorization.

53213532109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864594.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 53213532109 in words is "fifty-three billion, two hundred thirteen million, five hundred thirty-two thousand, one hundred nine".