3876582001261 has 2 divisors, whose sum is σ = 3876582001262. Its totient is φ = 3876582001260.

The previous prime is 3876582001249. The next prime is 3876582001283. The reversal of 3876582001261 is 1621002856783.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2552344931236 + 1324237070025 = 1597606^2 + 1150755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3876582001261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3876582001211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1938291000630 + 1938291000631.

It is an arithmetic number, because the mean of its divisors is an integer number (1938291000631).

Almost surely, 2^{3876582001261} is an apocalyptic number.

It is an amenable number.

3876582001261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3876582001261 is an equidigital number, since it uses as much as digits as its factorization.

3876582001261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 3876582001261 in words is "three trillion, eight hundred seventy-six billion, five hundred eighty-two million, one thousand, two hundred sixty-one".