53506719909 has 96 divisors (see below), whose sum is σ = 84371414400. Its totient is φ = 33898849920.

The previous prime is 53506719901. The next prime is 53506719911. The reversal of 53506719909 is 90991760535.

53506719909 is a `hidden beast` number, since 535 + 0 + 6 + 7 + 19 + 90 + 9 = 666.

It is not a de Polignac number, because 53506719909 - 2³ = 53506719901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53506719901) 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 95 ways as a sum of consecutive naturals, for example, 384940362 + ... + 384940500.

It is an arithmetic number, because the mean of its divisors is an integer number (878868900).

Almost surely, 2^53506719909 is an apocalyptic number.

It is an amenable number.

53506719909 is a deficient number, since it is larger than the sum of its proper divisors (30864694491).

53506719909 is an frugal number, since it uses more digits than its factorization.

53506719909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 2296350, while the sum is 54.

The spelling of 53506719909 in words is "fifty-three billion, five hundred six million, seven hundred nineteen thousand, nine hundred nine".