6988405550 has 24 divisors (see below), whose sum is σ = 14855354256. Its totient is φ = 2396024640.

The previous prime is 6988405511. The next prime is 6988405553. The reversal of 6988405550 is 555048896.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6988405553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9983087 + ... + 9983786.

It is an arithmetic number, because the mean of its divisors is an integer number (618973094).

Almost surely, 2^6988405550 is an apocalyptic number.

6988405550 is an abundant number, since it is smaller than the sum of its proper divisors (7866948706).

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

6988405550 is a wasteful number, since it uses less digits than its factorization.

6988405550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19966892 (or 19966887 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 50.

The square root of 6988405550 is about 83596.6838457124. The cubic root of 6988405550 is about 1911.8744379228.

The spelling of 6988405550 in words is "six billion, nine hundred eighty-eight million, four hundred five thousand, five hundred fifty".