4515420841945 has 16 divisors (see below), whose sum is σ = 5837414622480. Its totient is φ = 3333263745024.

The previous prime is 4515420841931. The next prime is 4515420841957. The reversal of 4515420841945 is 5491480245154.

It can be written as a sum of positive squares in 8 ways, for example, as 1096401656464 + 3419019185481 = 1047092^2 + 1849059^2 .

It is a cyclic number.

It is not a de Polignac number, because 4515420841945 - 2¹⁵ = 4515420809177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4515420841892 and 4515420841901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12327240 + ... + 12688249.

It is an arithmetic number, because the mean of its divisors is an integer number (364838413905).

Almost surely, 2^{4515420841945} is an apocalyptic number.

It is an amenable number.

4515420841945 is a deficient number, since it is larger than the sum of its proper divisors (1321993780535).

4515420841945 is a wasteful number, since it uses less digits than its factorization.

4515420841945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25018284.

The product of its (nonzero) digits is 4608000, while the sum is 52.

The spelling of 4515420841945 in words is "four trillion, five hundred fifteen billion, four hundred twenty million, eight hundred forty-one thousand, nine hundred forty-five".