613611020020 has 48 divisors (see below), whose sum is σ = 1311724814400. Its totient is φ = 241044733440.

The previous prime is 613611019963. The next prime is 613611020053. The reversal of 613611020020 is 20020116316.

It is a junction number, because it is equal to n+sod(n) for n = 613611019973 and 613611020000.

It is a congruent number.

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, 932935 + ... + 1448305.

It is an arithmetic number, because the mean of its divisors is an integer number (27327600300).

Almost surely, 2^613611020020 is an apocalyptic number.

It is an amenable number.

613611020020 is an abundant number, since it is smaller than the sum of its proper divisors (698113794380).

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

613611020020 is a wasteful number, since it uses less digits than its factorization.

613611020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516448 (or 516446 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 613611020020 its reverse (20020116316), we get a palindrome (633631136336).

The spelling of 613611020020 in words is "six hundred thirteen billion, six hundred eleven million, twenty thousand, twenty".