1206660619673 has 12 divisors (see below), whose sum is σ = 1275185385108. Its totient is φ = 1141649735040.

The previous prime is 1206660619663. The next prime is 1206660619733. The reversal of 1206660619673 is 3769160666021.

It can be written as a sum of positive squares in 2 ways, for example, as 572068347904 + 634592271769 = 756352^2 + 796613^2 .

It is not a de Polignac number, because 1206660619673 - 2¹² = 1206660615577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206660619643) 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, 1921436 + ... + 2470877.

It is an arithmetic number, because the mean of its divisors is an integer number (106265448759).

Almost surely, 2^{1206660619673} is an apocalyptic number.

It is an amenable number.

1206660619673 is a deficient number, since it is larger than the sum of its proper divisors (68524765435).

1206660619673 is an equidigital number, since it uses as much as digits as its factorization.

1206660619673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393112 (or 4393093 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 53.

The spelling of 1206660619673 in words is "one trillion, two hundred six billion, six hundred sixty million, six hundred nineteen thousand, six hundred seventy-three".