53209940073 has 4 divisors (see below), whose sum is σ = 70946586768. Its totient is φ = 35473293380.

The previous prime is 53209940057. The next prime is 53209940117. The reversal of 53209940073 is 37004990235.

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 53209940073 - 2⁴ = 53209940057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53209440073) 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, 8868323343 + ... + 8868323348.

It is an arithmetic number, because the mean of its divisors is an integer number (17736646692).

Almost surely, 2^53209940073 is an apocalyptic number.

It is an amenable number.

53209940073 is a deficient number, since it is larger than the sum of its proper divisors (17736646695).

53209940073 is a wasteful number, since it uses less digits than its factorization.

53209940073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17736646694.

The product of its (nonzero) digits is 204120, while the sum is 42.

The spelling of 53209940073 in words is "fifty-three billion, two hundred nine million, nine hundred forty thousand, seventy-three".