615000080020 has 12 divisors (see below), whose sum is σ = 1291500168084. Its totient is φ = 246000032000.

The previous prime is 615000080017. The next prime is 615000080033. The reversal of 615000080020 is 20080000516.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 177343738884 + 437656341136 = 421122^2 + 661556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 615000079973 and 615000080000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15375001981 + ... + 15375002020.

It is an arithmetic number, because the mean of its divisors is an integer number (107625014007).

Almost surely, 2^615000080020 is an apocalyptic number.

It is an amenable number.

615000080020 is an abundant number, since it is smaller than the sum of its proper divisors (676500088064).

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

615000080020 is a wasteful number, since it uses less digits than its factorization.

615000080020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30750004010 (or 30750004008 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 615000080020 its reverse (20080000516), we get a palindrome (635080080536).

The spelling of 615000080020 in words is "six hundred fifteen billion, eighty thousand, twenty".