3261124211687 has 2 divisors, whose sum is σ = 3261124211688. Its totient is φ = 3261124211686.

The previous prime is 3261124211617. The next prime is 3261124211743. The reversal of 3261124211687 is 7861124211623.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3261124211687 - 2³² = 3256829244391 is a prime.

It is a super-2 number, since 2×3261124211687² (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 (3261124211617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630562105843 + 1630562105844.

It is an arithmetic number, because the mean of its divisors is an integer number (1630562105844).

Almost surely, 2^{3261124211687} is an apocalyptic number.

3261124211687 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261124211687 is an equidigital number, since it uses as much as digits as its factorization.

3261124211687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The spelling of 3261124211687 in words is "three trillion, two hundred sixty-one billion, one hundred twenty-four million, two hundred eleven thousand, six hundred eighty-seven".