5515206620 has 144 divisors (see below), whose sum is σ = 14627633664. Its totient is φ = 1709769600.

The previous prime is 5515206583. The next prime is 5515206667. The reversal of 5515206620 is 266025155.

It is a super-2 number, since 2×5515206620² = 60835008122583648800, which contains 22 as substring.

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, 3573569 + ... + 3575111.

Almost surely, 2^5515206620 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 5515206620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7313816832).

5515206620 is an abundant number, since it is smaller than the sum of its proper divisors (9112427044).

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

5515206620 is a wasteful number, since it uses less digits than its factorization.

5515206620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 5515206620 is about 74264.4371149476. The cubic root of 5515206620 is about 1766.7994787223.

The spelling of 5515206620 in words is "five billion, five hundred fifteen million, two hundred six thousand, six hundred twenty".