101666259927 has 12 divisors (see below), whose sum is σ = 155489574240. Its totient is φ = 63790594368.

The previous prime is 101666259923. The next prime is 101666259967. The reversal of 101666259927 is 729952666101.

It is not a de Polignac number, because 101666259927 - 2² = 101666259923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101666259923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332242527 + ... + 332242832.

It is an arithmetic number, because the mean of its divisors is an integer number (12957464520).

Almost surely, 2^101666259927 is an apocalyptic number.

101666259927 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

101666259927 is a deficient number, since it is larger than the sum of its proper divisors (53823314313).

101666259927 is a wasteful number, since it uses less digits than its factorization.

101666259927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664485382 (or 664485379 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 101666259927 in words is "one hundred one billion, six hundred sixty-six million, two hundred fifty-nine thousand, nine hundred twenty-seven".