618267845961 has 12 divisors (see below), whose sum is σ = 893783786688. Its totient is φ = 411841534104.

The previous prime is 618267845959. The next prime is 618267845969. The reversal of 618267845961 is 169548762816.

618267845961 is a `hidden beast` number, since 6 + 18 + 26 + 7 + 8 + 4 + 596 + 1 = 666.

It is not a de Polignac number, because 618267845961 - 2¹ = 618267845959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (618267845969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28074205 + ... + 28096218.

It is an arithmetic number, because the mean of its divisors is an integer number (74481982224).

Almost surely, 2^618267845961 is an apocalyptic number.

It is an amenable number.

618267845961 is a deficient number, since it is larger than the sum of its proper divisors (275515940727).

618267845961 is a wasteful number, since it uses less digits than its factorization.

618267845961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56171652 (or 56171649 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 618267845961 in words is "six hundred eighteen billion, two hundred sixty-seven million, eight hundred forty-five thousand, nine hundred sixty-one".