105666051654 has 12 divisors (see below), whose sum is σ = 228943111956. Its totient is φ = 35222017212.

The previous prime is 105666051653. The next prime is 105666051671. The reversal of 105666051654 is 456150666501.

It is a super-2 number, since 2×105666051654² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105666051653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2935168084 + ... + 2935168119.

It is an arithmetic number, because the mean of its divisors is an integer number (19078592663).

Almost surely, 2^105666051654 is an apocalyptic number.

105666051654 is an abundant number, since it is smaller than the sum of its proper divisors (123277060302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105666051654 is a wasteful number, since it uses less digits than its factorization.

105666051654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870336211 (or 5870336208 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 105666051654 in words is "one hundred five billion, six hundred sixty-six million, fifty-one thousand, six hundred fifty-four".