3261266621623 has 4 divisors (see below), whose sum is σ = 3266978122408. Its totient is φ = 3255555120840.

The previous prime is 3261266621593. The next prime is 3261266621671.

3261266621623 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 3261266621623 - 2³⁷ = 3123827668151 is a prime.

It is a super-3 number, since 3×3261266621623³ (a number of 39 digits) contains 333 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 (3261266621023) 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, 2855749536 + ... + 2855750677.

It is an arithmetic number, because the mean of its divisors is an integer number (816744530602).

Almost surely, 2^{3261266621623} is an apocalyptic number.

3261266621623 is a deficient number, since it is larger than the sum of its proper divisors (5711500785).

3261266621623 is an equidigital number, since it uses as much as digits as its factorization.

3261266621623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711500784.

The product of its digits is 1119744, while the sum is 46.

The spelling of 3261266621623 in words is "three trillion, two hundred sixty-one billion, two hundred sixty-six million, six hundred twenty-one thousand, six hundred twenty-three".