3551260320861 has 32 divisors (see below), whose sum is σ = 5469591920256. Its totient is φ = 2025573888000.

The previous prime is 3551260320821. The next prime is 3551260320863. The reversal of 3551260320861 is 1680230621553.

It is not a de Polignac number, because 3551260320861 - 2¹¹ = 3551260318813 is a prime.

It is a super-2 number, since 2×3551260320861² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551260320863) 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 31 ways as a sum of consecutive naturals, for example, 12005701 + ... + 12297941.

It is an arithmetic number, because the mean of its divisors is an integer number (170924747508).

Almost surely, 2^{3551260320861} is an apocalyptic number.

It is an amenable number.

3551260320861 is a deficient number, since it is larger than the sum of its proper divisors (1918331599395).

3551260320861 is a wasteful number, since it uses less digits than its factorization.

3551260320861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313933.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 3551260320861 in words is "three trillion, five hundred fifty-one billion, two hundred sixty million, three hundred twenty thousand, eight hundred sixty-one".