1206346256677 has 2 divisors, whose sum is σ = 1206346256678. Its totient is φ = 1206346256676.

The previous prime is 1206346256639. The next prime is 1206346256741. The reversal of 1206346256677 is 7766526436021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952324208641 + 254022048036 = 975871^2 + 504006^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206346256677 - 2¹⁵ = 1206346223909 is a prime.

It is a super-2 number, since 2×1206346256677² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1206346266677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603173128338 + 603173128339.

It is an arithmetic number, because the mean of its divisors is an integer number (603173128339).

Almost surely, 2^{1206346256677} is an apocalyptic number.

It is an amenable number.

1206346256677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206346256677 is an equidigital number, since it uses as much as digits as its factorization.

1206346256677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 1206346256677 in words is "one trillion, two hundred six billion, three hundred forty-six million, two hundred fifty-six thousand, six hundred seventy-seven".