3261527431261 has 4 divisors (see below), whose sum is σ = 3558029925024. Its totient is φ = 2965024937500.

The previous prime is 3261527431231. The next prime is 3261527431271. The reversal of 3261527431261 is 1621347251623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3261527431261 - 2⁷ = 3261527431133 is a prime.

It is a super-2 number, since 2×3261527431261² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261527431231) 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 in 3 ways as a sum of consecutive naturals, for example, 148251246865 + ... + 148251246886.

It is an arithmetic number, because the mean of its divisors is an integer number (889507481256).

Almost surely, 2^{3261527431261} is an apocalyptic number.

It is an amenable number.

3261527431261 is a deficient number, since it is larger than the sum of its proper divisors (296502493763).

3261527431261 is a wasteful number, since it uses less digits than its factorization.

3261527431261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296502493762.

The product of its digits is 362880, while the sum is 43.

The spelling of 3261527431261 in words is "three trillion, two hundred sixty-one billion, five hundred twenty-seven million, four hundred thirty-one thousand, two hundred sixty-one".