53666700505 has 16 divisors (see below), whose sum is σ = 72153365184. Its totient is φ = 37975452480.

The previous prime is 53666700467. The next prime is 53666700511. The reversal of 53666700505 is 50500766635.

It is not a de Polignac number, because 53666700505 - 2¹⁵ = 53666667737 is a prime.

It is a super-2 number, since 2×53666700505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 13183887 + ... + 13187956.

It is an arithmetic number, because the mean of its divisors is an integer number (4509585324).

Almost surely, 2^53666700505 is an apocalyptic number.

53666700505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53666700505 is a deficient number, since it is larger than the sum of its proper divisors (18486664679).

53666700505 is a wasteful number, since it uses less digits than its factorization.

53666700505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26371896.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 53666700505 in words is "fifty-three billion, six hundred sixty-six million, seven hundred thousand, five hundred five".