66105000001615 has 8 divisors (see below), whose sum is σ = 79326085314528. Its totient is φ = 52883943126240.

The previous prime is 66105000001609. The next prime is 66105000001661. The reversal of 66105000001615 is 51610000050166.

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

It is not a de Polignac number, because 66105000001615 - 2⁵ = 66105000001583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1608376 + ... + 11610205.

It is an arithmetic number, because the mean of its divisors is an integer number (9915760664316).

Almost surely, 2^{66105000001615} is an apocalyptic number.

66105000001615 is a deficient number, since it is larger than the sum of its proper divisors (13221085312913).

66105000001615 is a wasteful number, since it uses less digits than its factorization.

66105000001615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14218769.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 66105000001615 in words is "sixty-six trillion, one hundred five billion, one thousand, six hundred fifteen".