618336581672 has 32 divisors (see below), whose sum is σ = 1186557034080. Its totient is φ = 301923961920.

The previous prime is 618336581663. The next prime is 618336581677. The reversal of 618336581672 is 276185633816.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (618336581677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785647 + ... + 2103617.

It is an arithmetic number, because the mean of its divisors is an integer number (37079907315).

Almost surely, 2^618336581672 is an apocalyptic number.

It is an amenable number.

618336581672 is a deficient number, since it is larger than the sum of its proper divisors (568220452408).

618336581672 is a wasteful number, since it uses less digits than its factorization.

618336581672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323673 (or 323669 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 618336581672 in words is "six hundred eighteen billion, three hundred thirty-six million, five hundred eighty-one thousand, six hundred seventy-two".