5551660020 has 48 divisors (see below), whose sum is σ = 15799488768. Its totient is φ = 1456172160.

The previous prime is 5551660019. The next prime is 5551660021. The reversal of 5551660020 is 200661555.

It is an interprime number because it is at equal distance from previous prime (5551660019) and next prime (5551660021).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 5551660020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551660021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754764 + ... + 762083.

It is an arithmetic number, because the mean of its divisors is an integer number (329156016).

Almost surely, 2^5551660020 is an apocalyptic number.

It is an amenable number.

5551660020 is an abundant number, since it is smaller than the sum of its proper divisors (10247828748).

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

5551660020 is a wasteful number, since it uses less digits than its factorization.

5551660020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516920 (or 1516918 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 5551660020 is about 74509.4626205289. The cubic root of 5551660020 is about 1770.6835560864.

The spelling of 5551660020 in words is "five billion, five hundred fifty-one million, six hundred sixty thousand, twenty".