618599944655 has 64 divisors (see below), whose sum is σ = 932491173888. Its totient is φ = 382710303360.

The previous prime is 618599944621. The next prime is 618599944709. The reversal of 618599944655 is 556449995816.

It is a happy number.

It is not a de Polignac number, because 618599944655 - 2⁶ = 618599944591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46620332 + ... + 46633598.

It is an arithmetic number, because the mean of its divisors is an integer number (14570174592).

Almost surely, 2^618599944655 is an apocalyptic number.

618599944655 is a deficient number, since it is larger than the sum of its proper divisors (313891229233).

618599944655 is a wasteful number, since it uses less digits than its factorization.

618599944655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14196.

The product of its digits is 419904000, while the sum is 71.

The spelling of 618599944655 in words is "six hundred eighteen billion, five hundred ninety-nine million, nine hundred forty-four thousand, six hundred fifty-five".