618823653838885 has 16 divisors (see below), whose sum is σ = 828935871192000. Its totient is φ = 439587204416640.

The previous prime is 618823653838867. The next prime is 618823653839021. The reversal of 618823653838885 is 588838356328816.

It is not a de Polignac number, because 618823653838885 - 2¹¹ = 618823653836837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618823653838799 and 618823653838808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130829522760 + ... + 130829527489.

It is an arithmetic number, because the mean of its divisors is an integer number (51808491949500).

Almost surely, 2^{618823653838885} is an apocalyptic number.

It is an amenable number.

618823653838885 is a deficient number, since it is larger than the sum of its proper divisors (210112217353115).

618823653838885 is a wasteful number, since it uses less digits than its factorization.

618823653838885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261659050308.

The product of its digits is 12740198400, while the sum is 82.

The spelling of 618823653838885 in words is "six hundred eighteen trillion, eight hundred twenty-three billion, six hundred fifty-three million, eight hundred thirty-eight thousand, eight hundred eighty-five".