551343444343156 has 24 divisors (see below), whose sum is σ = 965350550452680. Its totient is φ = 275529006047232.

The previous prime is 551343444343039. The next prime is 551343444343163. The reversal of 551343444343156 is 651343444343155.

It can be written as a sum of positive squares in 4 ways, for example, as 3034856663056 + 548308587680100 = 1742084^2 + 23415990^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551343444343097 and 551343444343106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496882540 + ... + 497990908.

It is an arithmetic number, because the mean of its divisors is an integer number (40222939602195).

Almost surely, 2^{551343444343156} is an apocalyptic number.

It is an amenable number.

551343444343156 is a deficient number, since it is larger than the sum of its proper divisors (414007106109524).

551343444343156 is a wasteful number, since it uses less digits than its factorization.

551343444343156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172643 (or 1172641 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 55.

Subtracting 551343444343156 from its reverse (651343444343155), we obtain a palindrome (99999999999999).

The spelling of 551343444343156 in words is "five hundred fifty-one trillion, three hundred forty-three billion, four hundred forty-four million, three hundred forty-three thousand, one hundred fifty-six".