5155612020 has 144 divisors (see below), whose sum is σ = 16942620240. Its totient is φ = 1268976384.

The previous prime is 5155611997. The next prime is 5155612039. The reversal of 5155612020 is 202165515.

5155612020 is a `hidden beast` number, since 515 + 5 + 6 + 120 + 20 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3456028944 + 1699583076 = 58788^2 + 41226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 388942 + ... + 401978.

It is an arithmetic number, because the mean of its divisors is an integer number (117657085).

Almost surely, 2^5155612020 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 5155612020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8471310120).

5155612020 is an abundant number, since it is smaller than the sum of its proper divisors (11787008220).

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

5155612020 is a wasteful number, since it uses less digits than its factorization.

5155612020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13091 (or 13060 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 5155612020 is about 71802.5906217875. The cubic root of 5155612020 is about 1727.5345526559.

Adding to 5155612020 its reverse (202165515), we get a palindrome (5357777535).

The spelling of 5155612020 in words is "five billion, one hundred fifty-five million, six hundred twelve thousand, twenty".