551643132364501 has 4 divisors (see below), whose sum is σ = 551643907235904. Its totient is φ = 551642357493100.

The previous prime is 551643132364487. The next prime is 551643132364507. The reversal of 551643132364501 is 105463231346155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 551643132364501 - 2¹¹ = 551643132362453 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 (551643132364507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386366845 + ... + 387791986.

It is an arithmetic number, because the mean of its divisors is an integer number (137910976808976).

Almost surely, 2^{551643132364501} is an apocalyptic number.

It is an amenable number.

551643132364501 is a deficient number, since it is larger than the sum of its proper divisors (774871403).

551643132364501 is an equidigital number, since it uses as much as digits as its factorization.

551643132364501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774871402.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 551643132364501 in words is "five hundred fifty-one trillion, six hundred forty-three billion, one hundred thirty-two million, three hundred sixty-four thousand, five hundred one".