1320166356105 has 32 divisors (see below), whose sum is σ = 2223916122240. Its totient is φ = 666888007680.

The previous prime is 1320166356101. The next prime is 1320166356127. The reversal of 1320166356105 is 5016536610231.

It is not a de Polignac number, because 1320166356105 - 2² = 1320166356101 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1320166356101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 836175 + ... + 1827435.

It is an arithmetic number, because the mean of its divisors is an integer number (69497378820).

Almost surely, 2^{1320166356105} is an apocalyptic number.

1320166356105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320166356105 is a deficient number, since it is larger than the sum of its proper divisors (903749766135).

1320166356105 is a wasteful number, since it uses less digits than its factorization.

1320166356105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995961.

The product of its (nonzero) digits is 97200, while the sum is 39.

The spelling of 1320166356105 in words is "one trillion, three hundred twenty billion, one hundred sixty-six million, three hundred fifty-six thousand, one hundred five".