3261510206140 has 12 divisors (see below), whose sum is σ = 6849171432936. Its totient is φ = 1304604082448.

The previous prime is 3261510206111. The next prime is 3261510206161. The reversal of 3261510206140 is 416020151623.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81537755134 + ... + 81537755173.

It is an arithmetic number, because the mean of its divisors is an integer number (570764286078).

Almost surely, 2^{3261510206140} is an apocalyptic number.

It is an amenable number.

3261510206140 is an abundant number, since it is smaller than the sum of its proper divisors (3587661226796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3261510206140 is a wasteful number, since it uses less digits than its factorization.

3261510206140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163075510316 (or 163075510314 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 3261510206140 its reverse (416020151623), we get a palindrome (3677530357763).

The spelling of 3261510206140 in words is "three trillion, two hundred sixty-one billion, five hundred ten million, two hundred six thousand, one hundred forty".