561672706028 has 96 divisors (see below), whose sum is σ = 1210512629760. Its totient is φ = 222728901120.

The previous prime is 561672706027. The next prime is 561672706043. The reversal of 561672706028 is 820607276165.

561672706028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×561672706028² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561672706027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64459400 + ... + 64468112.

It is an arithmetic number, because the mean of its divisors is an integer number (12609506560).

Almost surely, 2^561672706028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561672706028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605256314880).

561672706028 is an abundant number, since it is smaller than the sum of its proper divisors (648839923732).

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

561672706028 is a wasteful number, since it uses less digits than its factorization.

561672706028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12007 (or 12005 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 561672706028 in words is "five hundred sixty-one billion, six hundred seventy-two million, seven hundred six thousand, twenty-eight".