618707776368 has 120 divisors (see below), whose sum is σ = 1774236472848. Its totient is φ = 185630720000.

The previous prime is 618707776301. The next prime is 618707776391. The reversal of 618707776368 is 863677707816.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 618707776299 and 618707776308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59248 + ... + 1113968.

Almost surely, 2^618707776368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618707776368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (887118236424).

618707776368 is an abundant number, since it is smaller than the sum of its proper divisors (1155528696480).

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

618707776368 is a wasteful number, since it uses less digits than its factorization.

618707776368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054855 (or 1054838 counting only the distinct ones).

The product of its (nonzero) digits is 99574272, while the sum is 66.

The spelling of 618707776368 in words is "six hundred eighteen billion, seven hundred seven million, seven hundred seventy-six thousand, three hundred sixty-eight".