4379020561 has 8 divisors (see below), whose sum is σ = 4535433000. Its totient is φ = 4227996304.

The previous prime is 4379020523. The next prime is 4379020567. The reversal of 4379020561 is 1650209734.

It can be written as a sum of positive squares in 4 ways, for example, as 131239936 + 4247780625 = 11456^2 + 65175^2 .

It is not a de Polignac number, because 4379020561 - 2⁷ = 4379020433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4379020561.

It is not an unprimeable number, because it can be changed into a prime (4379020567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65386 + ... + 114163.

It is an arithmetic number, because the mean of its divisors is an integer number (566929125).

Almost surely, 2^4379020561 is an apocalyptic number.

It is an amenable number.

4379020561 is a deficient number, since it is larger than the sum of its proper divisors (156412439).

4379020561 is an frugal number, since it uses more digits than its factorization.

4379020561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179636 (or 179578 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 4379020561 is about 66174.1683816276. The cubic root of 4379020561 is about 1636.0340120469.

The spelling of 4379020561 in words is "four billion, three hundred seventy-nine million, twenty thousand, five hundred sixty-one".