551666116050 has 96 divisors (see below), whose sum is σ = 1563821337600. Its totient is φ = 126075600960.

The previous prime is 551666116021. The next prime is 551666116093. The reversal of 551666116050 is 50611666155.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 551666115993 and 551666116011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7395841 + ... + 7470059.

It is an arithmetic number, because the mean of its divisors is an integer number (16289805600).

Almost surely, 2^551666116050 is an apocalyptic number.

551666116050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551666116050 is an abundant number, since it is smaller than the sum of its proper divisors (1012155221550).

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

551666116050 is a wasteful number, since it uses less digits than its factorization.

551666116050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81320 (or 81315 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 551666116050 in words is "five hundred fifty-one billion, six hundred sixty-six million, one hundred sixteen thousand, fifty".