2656672766039 has 2 divisors, whose sum is σ = 2656672766040. Its totient is φ = 2656672766038.

The previous prime is 2656672766029. The next prime is 2656672766051. The reversal of 2656672766039 is 9306672766562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2656672766039 - 2⁴ = 2656672766023 is a prime.

It is a super-2 number, since 2×2656672766039² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656672766029) 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 as a sum of consecutive naturals, namely, 1328336383019 + 1328336383020.

It is an arithmetic number, because the mean of its divisors is an integer number (1328336383020).

Almost surely, 2^{2656672766039} is an apocalyptic number.

2656672766039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656672766039 is an equidigital number, since it uses as much as digits as its factorization.

2656672766039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 205752960, while the sum is 65.

The spelling of 2656672766039 in words is "two trillion, six hundred fifty-six billion, six hundred seventy-two million, seven hundred sixty-six thousand, thirty-nine".