551191623353219 has 2 divisors, whose sum is σ = 551191623353220. Its totient is φ = 551191623353218.

The previous prime is 551191623353153. The next prime is 551191623353291. The reversal of 551191623353219 is 912353326191155.

Together with next prime (551191623353291) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551191623353219 - 2⁸ = 551191623352963 is a prime.

It is a super-2 number, since 2×551191623353219² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (551191623353719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275595811676609 + 275595811676610.

It is an arithmetic number, because the mean of its divisors is an integer number (275595811676610).

Almost surely, 2^{551191623353219} is an apocalyptic number.

551191623353219 is a deficient number, since it is larger than the sum of its proper divisors (1).

551191623353219 is an equidigital number, since it uses as much as digits as its factorization.

551191623353219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6561000, while the sum is 56.

The spelling of 551191623353219 in words is "five hundred fifty-one trillion, one hundred ninety-one billion, six hundred twenty-three million, three hundred fifty-three thousand, two hundred nineteen".