7123005036 has 216 divisors, whose sum is σ = 21629287680. Its totient is φ = 1935679680.

The previous prime is 7123005023. The next prime is 7123005037. The reversal of 7123005036 is 6305003217.

It is a happy number.

It is a super-2 number, since 2×7123005036² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7123005037) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16225305 + ... + 16225743.

Almost surely, 2^7123005036 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 7123005036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10814643840).

7123005036 is an abundant number, since it is smaller than the sum of its proper divisors (14506282644).

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

7123005036 is a wasteful number, since it uses less digits than its factorization.

7123005036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 7123005036 is about 84397.8971065038. The cubic root of 7123005036 is about 1924.0709553954.

The spelling of 7123005036 in words is "seven billion, one hundred twenty-three million, five thousand, thirty-six".