618356424653816 has 8 divisors (see below), whose sum is σ = 1159418296225920. Its totient is φ = 309178212326904.

The previous prime is 618356424653777. The next prime is 618356424653819.

618356424653816 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618356424653819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38647276540856 + ... + 38647276540871.

It is an arithmetic number, because the mean of its divisors is an integer number (144927287028240).

Almost surely, 2^{618356424653816} is an apocalyptic number.

It is an amenable number.

618356424653816 is a deficient number, since it is larger than the sum of its proper divisors (541061871572104).

618356424653816 is a wasteful number, since it uses less digits than its factorization.

618356424653816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77294553081733 (or 77294553081729 counting only the distinct ones).

The product of its digits is 597196800, while the sum is 68.

The spelling of 618356424653816 in words is "six hundred eighteen trillion, three hundred fifty-six billion, four hundred twenty-four million, six hundred fifty-three thousand, eight hundred sixteen".