5515006661520 has 160 divisors (see below), whose sum is σ = 18177942965760. Its totient is φ = 1378366832640.

The previous prime is 5515006661491. The next prime is 5515006661623. The reversal of 5515006661520 is 251666005155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1852741 + ... + 3802980.

It is an arithmetic number, because the mean of its divisors is an integer number (113612143536).

Almost surely, 2^{5515006661520} is an apocalyptic number.

It is an amenable number.

5515006661520 is an abundant number, since it is smaller than the sum of its proper divisors (12662936304240).

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

5515006661520 is a wasteful number, since it uses less digits than its factorization.

5515006661520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655993 (or 5655987 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 5515006661520 in words is "five trillion, five hundred fifteen billion, six million, six hundred sixty-one thousand, five hundred twenty".