6845566216923 has 48 divisors (see below), whose sum is σ = 11324334121152. Its totient is φ = 3903549408000.

The previous prime is 6845566216903. The next prime is 6845566216943. The reversal of 6845566216923 is 3296126655486.

6845566216923 is a `hidden beast` number, since 6 + 8 + 4 + 5 + 566 + 2 + 1 + 69 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (6845566216903) and next prime (6845566216943).

It is not a de Polignac number, because 6845566216923 - 2¹⁷ = 6845566085851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6845566216903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72453253 + ... + 72547673.

It is an arithmetic number, because the mean of its divisors is an integer number (235923627524).

Almost surely, 2^{6845566216923} is an apocalyptic number.

6845566216923 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6845566216923 is a deficient number, since it is larger than the sum of its proper divisors (4478767904229).

6845566216923 is a wasteful number, since it uses less digits than its factorization.

6845566216923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96836 (or 96833 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 63.

The spelling of 6845566216923 in words is "six trillion, eight hundred forty-five billion, five hundred sixty-six million, two hundred sixteen thousand, nine hundred twenty-three".