101051666566 has 8 divisors (see below), whose sum is σ = 151590276360. Its totient is φ = 50521574448.

The previous prime is 101051666563. The next prime is 101051666581. The reversal of 101051666566 is 665666150101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×101051666566² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101051666563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099676 + ... + 2147263.

It is an arithmetic number, because the mean of its divisors is an integer number (18948784545).

Almost surely, 2^101051666566 is an apocalyptic number.

101051666566 is a deficient number, since it is larger than the sum of its proper divisors (50538609794).

101051666566 is a wasteful number, since it uses less digits than its factorization.

101051666566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258838.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 101051666566 in words is "one hundred one billion, fifty-one million, six hundred sixty-six thousand, five hundred sixty-six".