3261041501111 has 4 divisors (see below), whose sum is σ = 3263677752552. Its totient is φ = 3258405249672.

The previous prime is 3261041501041. The next prime is 3261041501129. The reversal of 3261041501111 is 1111051401623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3261041501111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261041501911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1318123865 + ... + 1318126338.

It is an arithmetic number, because the mean of its divisors is an integer number (815919438138).

Almost surely, 2^{3261041501111} is an apocalyptic number.

3261041501111 is a deficient number, since it is larger than the sum of its proper divisors (2636251441).

3261041501111 is a wasteful number, since it uses less digits than its factorization.

3261041501111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636251440.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 3261041501111 its reverse (1111051401623), we get a palindrome (4372092902734).

The spelling of 3261041501111 in words is "three trillion, two hundred sixty-one billion, forty-one million, five hundred one thousand, one hundred eleven".