551100661050 has 48 divisors (see below), whose sum is σ = 1438662785760. Its totient is φ = 139225429440.

The previous prime is 551100661043. The next prime is 551100661081. The reversal of 551100661050 is 50166001155.

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

It is a junction number, because it is equal to n+sod(n) for n = 551100660999 and 551100661017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96681477 + ... + 96687176.

It is an arithmetic number, because the mean of its divisors is an integer number (29972141370).

Almost surely, 2^551100661050 is an apocalyptic number.

551100661050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551100661050 is an abundant number, since it is smaller than the sum of its proper divisors (887562124710).

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

551100661050 is a wasteful number, since it uses less digits than its factorization.

551100661050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193368687 (or 193368682 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 551100661050 in words is "five hundred fifty-one billion, one hundred million, six hundred sixty-one thousand, fifty".