101666051550501 has 8 divisors (see below), whose sum is σ = 136264446057984. Its totient is φ = 67422512371680.

The previous prime is 101666051550487. The next prime is 101666051550517. The reversal of 101666051550501 is 105055150666101.

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

It is not a de Polignac number, because 101666051550501 - 2¹⁹ = 101666051026213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101666051500501) 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, 88713831496 + ... + 88713832641.

It is an arithmetic number, because the mean of its divisors is an integer number (17033055757248).

Almost surely, 2^{101666051550501} is an apocalyptic number.

It is an amenable number.

101666051550501 is a deficient number, since it is larger than the sum of its proper divisors (34598394507483).

101666051550501 is a wasteful number, since it uses less digits than its factorization.

101666051550501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177427664331.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 101666051550501 in words is "one hundred one trillion, six hundred sixty-six billion, fifty-one million, five hundred fifty thousand, five hundred one".