53605311809 has 16 divisors (see below), whose sum is σ = 61358438400. Its totient is φ = 45876063744.

The previous prime is 53605311791. The next prime is 53605311811. The reversal of 53605311809 is 90811350635.

It is a de Polignac number, because none of the positive numbers 2^k-53605311809 is a prime.

It is a super-2 number, since 2×53605311809² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53605311889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23335949 + ... + 23338245.

It is an arithmetic number, because the mean of its divisors is an integer number (3834902400).

Almost surely, 2^53605311809 is an apocalyptic number.

It is an amenable number.

53605311809 is a deficient number, since it is larger than the sum of its proper divisors (7753126591).

53605311809 is a wasteful number, since it uses less digits than its factorization.

53605311809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6032.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 53605311809 in words is "fifty-three billion, six hundred five million, three hundred eleven thousand, eight hundred nine".