53705740666 has 16 divisors (see below), whose sum is σ = 81193764960. Its totient is φ = 26641254640.

The previous prime is 53705740663. The next prime is 53705740691. The reversal of 53705740666 is 66604750735.

It is a super-2 number, since 2×53705740666² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53705740663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128705 + ... + 1175323.

It is an arithmetic number, because the mean of its divisors is an integer number (5074610310).

Almost surely, 2^53705740666 is an apocalyptic number.

53705740666 is a deficient number, since it is larger than the sum of its proper divisors (27488024294).

53705740666 is a wasteful number, since it uses less digits than its factorization.

53705740666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51149.

The product of its (nonzero) digits is 3175200, while the sum is 49.

The spelling of 53705740666 in words is "fifty-three billion, seven hundred five million, seven hundred forty thousand, six hundred sixty-six".