551311983101 has 12 divisors (see below), whose sum is σ = 641633880636. Its totient is φ = 471710785920.

The previous prime is 551311983023. The next prime is 551311983107. The reversal of 551311983101 is 101389113155.

It can be written as a sum of positive squares in 2 ways, for example, as 409504005625 + 141807977476 = 639925^2 + 376574^2 .

It is not a de Polignac number, because 551311983101 - 2¹⁰ = 551311982077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551311983107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134006690 + ... + 134010803.

It is an arithmetic number, because the mean of its divisors is an integer number (53469490053).

Almost surely, 2^551311983101 is an apocalyptic number.

It is an amenable number.

551311983101 is a deficient number, since it is larger than the sum of its proper divisors (90321897535).

551311983101 is a wasteful number, since it uses less digits than its factorization.

551311983101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268017532 (or 268017521 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 38.

The spelling of 551311983101 in words is "five hundred fifty-one billion, three hundred eleven million, nine hundred eighty-three thousand, one hundred one".