2140043851877 has 2 divisors, whose sum is σ = 2140043851878. Its totient is φ = 2140043851876.

The previous prime is 2140043851861. The next prime is 2140043851901. The reversal of 2140043851877 is 7781583400412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1325996007361 + 814047844516 = 1151519^2 + 902246^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140043851877 - 2⁴ = 2140043851861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140043851807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070021925938 + 1070021925939.

It is an arithmetic number, because the mean of its divisors is an integer number (1070021925939).

Almost surely, 2^{2140043851877} is an apocalyptic number.

It is an amenable number.

2140043851877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140043851877 is an equidigital number, since it uses as much as digits as its factorization.

2140043851877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 2140043851877 in words is "two trillion, one hundred forty billion, forty-three million, eight hundred fifty-one thousand, eight hundred seventy-seven".