618335533816 has 256 divisors, whose sum is σ = 1640204697600. Its totient is φ = 210465216000.

The previous prime is 618335533807. The next prime is 618335533819.

618335533816 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618335533819) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 296847511 + ... + 296849593.

It is an arithmetic number, because the mean of its divisors is an integer number (6407049600).

Almost surely, 2^618335533816 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 618335533816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820102348800).

618335533816 is an abundant number, since it is smaller than the sum of its proper divisors (1021869163784).

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

618335533816 is a wasteful number, since it uses less digits than its factorization.

618335533816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090 (or 4086 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The spelling of 618335533816 in words is "six hundred eighteen billion, three hundred thirty-five million, five hundred thirty-three thousand, eight hundred sixteen".