53309557739 has 4 divisors (see below), whose sum is σ = 53433246240. Its totient is φ = 53185869240.

The previous prime is 53309557687. The next prime is 53309557771. The reversal of 53309557739 is 93775590335.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 53309557739 - 2²⁸ = 53041122283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53309557039) 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, 61843604 + ... + 61844465.

It is an arithmetic number, because the mean of its divisors is an integer number (13358311560).

Almost surely, 2^53309557739 is an apocalyptic number.

53309557739 is a deficient number, since it is larger than the sum of its proper divisors (123688501).

53309557739 is a wasteful number, since it uses less digits than its factorization.

53309557739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123688500.

The product of its (nonzero) digits is 13395375, while the sum is 56.

The spelling of 53309557739 in words is "fifty-three billion, three hundred nine million, five hundred fifty-seven thousand, seven hundred thirty-nine".