3775862429981 has 2 divisors, whose sum is σ = 3775862429982. Its totient is φ = 3775862429980.

The previous prime is 3775862429971. The next prime is 3775862430023. The reversal of 3775862429981 is 1899242685773.

3775862429981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2919758212900 + 856104217081 = 1708730^2 + 925259^2 .

It is an emirp because it is prime and its reverse (1899242685773) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3775862429981 is a prime.

It is a super-2 number, since 2×3775862429981² (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 (3775862429971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1887931214990 + 1887931214991.

It is an arithmetic number, because the mean of its divisors is an integer number (1887931214991).

Almost surely, 2^{3775862429981} is an apocalyptic number.

It is an amenable number.

3775862429981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3775862429981 is an equidigital number, since it uses as much as digits as its factorization.

3775862429981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 365783040, while the sum is 71.

The spelling of 3775862429981 in words is "three trillion, seven hundred seventy-five billion, eight hundred sixty-two million, four hundred twenty-nine thousand, nine hundred eighty-one".