4123665546 has 128 divisors (see below), whose sum is σ = 11176704000. Its totient is φ = 979464960.

The previous prime is 4123665509. The next prime is 4123665547. The reversal of 4123665546 is 6455663214.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4123665498 and 4123665507.

It is not an unprimeable number, because it can be changed into a prime (4123665547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 651505 + ... + 657803.

It is an arithmetic number, because the mean of its divisors is an integer number (87318000).

Almost surely, 2^4123665546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4123665546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5588352000).

4123665546 is an abundant number, since it is smaller than the sum of its proper divisors (7053038454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4123665546 is a wasteful number, since it uses less digits than its factorization.

4123665546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444.

The product of its digits is 518400, while the sum is 42.

The square root of 4123665546 is about 64215.7733426921. The cubic root of 4123665546 is about 1603.5942046478.

The spelling of 4123665546 in words is "four billion, one hundred twenty-three million, six hundred sixty-five thousand, five hundred forty-six".