3518555231161 has 4 divisors (see below), whose sum is σ = 3518763065424. Its totient is φ = 3518347396900.

The previous prime is 3518555231131. The next prime is 3518555231171. The reversal of 3518555231161 is 1611325558153.

It is a happy number.

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 3518555231161 - 2³¹ = 3516407747513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3518555231131) 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, 103891735 + ... + 103925596.

It is an arithmetic number, because the mean of its divisors is an integer number (879690766356).

Almost surely, 2^{3518555231161} is an apocalyptic number.

It is an amenable number.

3518555231161 is a deficient number, since it is larger than the sum of its proper divisors (207834263).

3518555231161 is a wasteful number, since it uses less digits than its factorization.

3518555231161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207834262.

The product of its digits is 540000, while the sum is 46.

The spelling of 3518555231161 in words is "three trillion, five hundred eighteen billion, five hundred fifty-five million, two hundred thirty-one thousand, one hundred sixty-one".