2111670511673 has 2 divisors, whose sum is σ = 2111670511674. Its totient is φ = 2111670511672.

The previous prime is 2111670511669. The next prime is 2111670511781. The reversal of 2111670511673 is 3761150761112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115163456169 + 996507055504 = 1056013^2 + 998252^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111670511673 - 2² = 2111670511669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111670511673.

It is not a weakly prime, because it can be changed into another prime (2111670511663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055835255836 + 1055835255837.

It is an arithmetic number, because the mean of its divisors is an integer number (1055835255837).

Almost surely, 2^{2111670511673} is an apocalyptic number.

It is an amenable number.

2111670511673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111670511673 is an equidigital number, since it uses as much as digits as its factorization.

2111670511673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 2111670511673 in words is "two trillion, one hundred eleven billion, six hundred seventy million, five hundred eleven thousand, six hundred seventy-three".