2667121943 has 2 divisors, whose sum is σ = 2667121944. Its totient is φ = 2667121942.

The previous prime is 2667121907. The next prime is 2667121957. The reversal of 2667121943 is 3491217662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2667121943 - 2¹⁸ = 2666859799 is a prime.

It is a super-2 number, since 2×2667121943² = 14227078917664190498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2667121943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2667021943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333560971 + 1333560972.

It is an arithmetic number, because the mean of its divisors is an integer number (1333560972).

Almost surely, 2^2667121943 is an apocalyptic number.

2667121943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2667121943 is an equidigital number, since it uses as much as digits as its factorization.

2667121943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 2667121943 is about 51644.1859554394. The cubic root of 2667121943 is about 1386.8014619552.

The spelling of 2667121943 in words is "two billion, six hundred sixty-seven million, one hundred twenty-one thousand, nine hundred forty-three".