66105000001606 has 24 divisors (see below), whose sum is σ = 99525342843432. Its totient is φ = 32930336947200.

The previous prime is 66105000001583. The next prime is 66105000001609. The reversal of 66105000001606 is 60610000050166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66105000001609) 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, 1344365401 + ... + 1344414571.

It is an arithmetic number, because the mean of its divisors is an integer number (4146889285143).

Almost surely, 2^{66105000001606} is an apocalyptic number.

66105000001606 is a deficient number, since it is larger than the sum of its proper divisors (33420342841826).

66105000001606 is an equidigital number, since it uses as much as digits as its factorization.

66105000001606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58248 (or 57967 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 66105000001606 in words is "sixty-six trillion, one hundred five billion, one thousand, six hundred six".