3945747966053 has 2 divisors, whose sum is σ = 3945747966054. Its totient is φ = 3945747966052.

The previous prime is 3945747966023. The next prime is 3945747966059. The reversal of 3945747966053 is 3506697475493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2682657445924 + 1263090520129 = 1637882^2 + 1123873^2 .

It is a cyclic number.

It is not a de Polignac number, because 3945747966053 - 2¹⁴ = 3945747949669 is a prime.

It is a super-2 number, since 2×3945747966053² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3945747966059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972873983026 + 1972873983027.

It is an arithmetic number, because the mean of its divisors is an integer number (1972873983027).

Almost surely, 2^{3945747966053} is an apocalyptic number.

It is an amenable number.

3945747966053 is a deficient number, since it is larger than the sum of its proper divisors (1).

3945747966053 is an equidigital number, since it uses as much as digits as its factorization.

3945747966053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 514382400, while the sum is 68.

The spelling of 3945747966053 in words is "three trillion, nine hundred forty-five billion, seven hundred forty-seven million, nine hundred sixty-six thousand, fifty-three".