5515565661006 has 16 divisors (see below), whose sum is σ = 11032521954384. Its totient is φ = 1838290114944.

The previous prime is 5515565660999. The next prime is 5515565661037. The reversal of 5515565661006 is 6001665655155.

It is a self number, because there is not a number n which added to its sum of digits gives 5515565661006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57891451 + ... + 57986646.

It is an arithmetic number, because the mean of its divisors is an integer number (689532622149).

Almost surely, 2^{5515565661006} is an apocalyptic number.

5515565661006 is an abundant number, since it is smaller than the sum of its proper divisors (5516956293378).

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

5515565661006 is a wasteful number, since it uses less digits than its factorization.

5515565661006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115886035.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 5515565661006 in words is "five trillion, five hundred fifteen billion, five hundred sixty-five million, six hundred sixty-one thousand, six".