551498363894155 has 4 divisors (see below), whose sum is σ = 661798036672992. Its totient is φ = 441198691115320.

The previous prime is 551498363894131. The next prime is 551498363894221.

It is a happy number.

551498363894155 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 551498363894155 - 2⁹ = 551498363893643 is a prime.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55149836389411 + ... + 55149836389420.

It is an arithmetic number, because the mean of its divisors is an integer number (165449509168248).

Almost surely, 2^{551498363894155} is an apocalyptic number.

551498363894155 is a deficient number, since it is larger than the sum of its proper divisors (110299672778837).

551498363894155 is a wasteful number, since it uses less digits than its factorization.

551498363894155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110299672778836.

The product of its digits is 2799360000, while the sum is 76.

The spelling of 551498363894155 in words is "five hundred fifty-one trillion, four hundred ninety-eight billion, three hundred sixty-three million, eight hundred ninety-four thousand, one hundred fifty-five".