53205555505 has 16 divisors (see below), whose sum is σ = 67508421120. Its totient is φ = 40143368448.

The previous prime is 53205555499. The next prime is 53205555517. The reversal of 53205555505 is 50555550235.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53205555505 is a prime.

It is a super-2 number, since 2×53205555505² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1234552 + ... + 1276921.

It is an arithmetic number, because the mean of its divisors is an integer number (4219276320).

Almost surely, 2^53205555505 is an apocalyptic number.

It is an amenable number.

53205555505 is a deficient number, since it is larger than the sum of its proper divisors (14302865615).

53205555505 is a wasteful number, since it uses less digits than its factorization.

53205555505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511720.

The product of its (nonzero) digits is 468750, while the sum is 40.

The spelling of 53205555505 in words is "fifty-three billion, two hundred five million, five hundred fifty-five thousand, five hundred five".