7124945856 has 112 divisors (see below), whose sum is σ = 21568720896. Its totient is φ = 2033409024.

The previous prime is 7124945797. The next prime is 7124945857. The reversal of 7124945856 is 6585494217.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 7124945799 and 7124945808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7124945857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1458490 + ... + 1463366.

Almost surely, 2^7124945856 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 7124945856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10784360448).

7124945856 is an abundant number, since it is smaller than the sum of its proper divisors (14443775040).

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

7124945856 is a wasteful number, since it uses less digits than its factorization.

7124945856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5986 (or 5976 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 7124945856 is about 84409.3943586850. The cubic root of 7124945856 is about 1924.2456913981.

The spelling of 7124945856 in words is "seven billion, one hundred twenty-four million, nine hundred forty-five thousand, eight hundred fifty-six".