1206661120045 has 32 divisors (see below), whose sum is σ = 1548820880640. Its totient is φ = 899287004160.

The previous prime is 1206661120043. The next prime is 1206661120073. The reversal of 1206661120045 is 5400211666021.

It is not a de Polignac number, because 1206661120045 - 2¹ = 1206661120043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206661120043) 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, 9041250 + ... + 9173740.

It is an arithmetic number, because the mean of its divisors is an integer number (48400652520).

Almost surely, 2^{1206661120045} is an apocalyptic number.

It is an amenable number.

1206661120045 is a deficient number, since it is larger than the sum of its proper divisors (342159760595).

1206661120045 is a wasteful number, since it uses less digits than its factorization.

1206661120045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133605.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 1206661120045 its reverse (5400211666021), we get a palindrome (6606872786066).

The spelling of 1206661120045 in words is "one trillion, two hundred six billion, six hundred sixty-one million, one hundred twenty thousand, forty-five".