618118453805172 has 48 divisors (see below), whose sum is σ = 1444659903977472. Its totient is φ = 205699263299200.

The previous prime is 618118453805063. The next prime is 618118453805201. The reversal of 618118453805172 is 271508354811816.

It is a super-2 number, since 2×618118453805172² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 115498 + ... + 35160350.

It is an arithmetic number, because the mean of its divisors is an integer number (30097081332864).

Almost surely, 2^{618118453805172} is an apocalyptic number.

It is an amenable number.

618118453805172 is an abundant number, since it is smaller than the sum of its proper divisors (826541450172300).

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

618118453805172 is a wasteful number, since it uses less digits than its factorization.

618118453805172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35047288 (or 35047286 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 60.

The spelling of 618118453805172 in words is "six hundred eighteen trillion, one hundred eighteen billion, four hundred fifty-three million, eight hundred five thousand, one hundred seventy-two".