1206545165331 has 16 divisors (see below), whose sum is σ = 1755168267648. Its totient is φ = 731158876800.

The previous prime is 1206545165303. The next prime is 1206545165393. The reversal of 1206545165331 is 1335615456021.

It is a happy number.

It is not a de Polignac number, because 1206545165331 - 2¹⁷ = 1206545034259 is a prime.

It is a super-2 number, since 2×1206545165331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1206545161331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710886 + ... + 2310891.

It is an arithmetic number, because the mean of its divisors is an integer number (109698016728).

Almost surely, 2^{1206545165331} is an apocalyptic number.

1206545165331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1206545165331 is a deficient number, since it is larger than the sum of its proper divisors (548623102317).

1206545165331 is a wasteful number, since it uses less digits than its factorization.

1206545165331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030882.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 1206545165331 in words is "one trillion, two hundred six billion, five hundred forty-five million, one hundred sixty-five thousand, three hundred thirty-one".