2111670504971 has 2 divisors, whose sum is σ = 2111670504972. Its totient is φ = 2111670504970.

The previous prime is 2111670504949. The next prime is 2111670505069. The reversal of 2111670504971 is 1794050761112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111670504971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111670504071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055835252485 + 1055835252486.

It is an arithmetic number, because the mean of its divisors is an integer number (1055835252486).

Almost surely, 2^{2111670504971} is an apocalyptic number.

2111670504971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111670504971 is an equidigital number, since it uses as much as digits as its factorization.

2111670504971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 2111670504971 in words is "two trillion, one hundred eleven billion, six hundred seventy million, five hundred four thousand, nine hundred seventy-one".