66105156005 has 16 divisors (see below), whose sum is σ = 90682397184. Its totient is φ = 45317301120.

The previous prime is 66105156001. The next prime is 66105156067. The reversal of 66105156005 is 50065150166.

It is not a de Polignac number, because 66105156005 - 2² = 66105156001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66105156001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113216 + ... + 380825.

It is an arithmetic number, because the mean of its divisors is an integer number (5667649824).

Almost surely, 2^66105156005 is an apocalyptic number.

It is an amenable number.

66105156005 is a deficient number, since it is larger than the sum of its proper divisors (24577241179).

66105156005 is a wasteful number, since it uses less digits than its factorization.

66105156005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497876.

The product of its (nonzero) digits is 27000, while the sum is 35.

It can be divided in two parts, 6610 and 5156005, that added together give a palindrome (5162615).

The spelling of 66105156005 in words is "sixty-six billion, one hundred five million, one hundred fifty-six thousand, five".