2105506052957 has 2 divisors, whose sum is σ = 2105506052958. Its totient is φ = 2105506052956.

The previous prime is 2105506052933. The next prime is 2105506053019. The reversal of 2105506052957 is 7592506055012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1485422250841 + 620083802116 = 1218779^2 + 787454^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105506052957 - 2²⁶ = 2105438944093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105506052357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052753026478 + 1052753026479.

It is an arithmetic number, because the mean of its divisors is an integer number (1052753026479).

Almost surely, 2^{2105506052957} is an apocalyptic number.

It is an amenable number.

2105506052957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105506052957 is an equidigital number, since it uses as much as digits as its factorization.

2105506052957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 2105506052957 in words is "two trillion, one hundred five billion, five hundred six million, fifty-two thousand, nine hundred fifty-seven".