551949189119 has 4 divisors (see below), whose sum is σ = 551965142496. Its totient is φ = 551933235744.

The previous prime is 551949189109. The next prime is 551949189131. The reversal of 551949189119 is 911981949155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911981949155 = 5 ⋅182396389831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551949189119 is a prime.

It is a super-2 number, since 2×551949189119² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551949189109) 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, 7924679 + ... + 7994024.

It is an arithmetic number, because the mean of its divisors is an integer number (137991285624).

Almost surely, 2^551949189119 is an apocalyptic number.

551949189119 is a deficient number, since it is larger than the sum of its proper divisors (15953377).

551949189119 is a wasteful number, since it uses less digits than its factorization.

551949189119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15953376.

The product of its digits is 5248800, while the sum is 62.

The spelling of 551949189119 in words is "five hundred fifty-one billion, nine hundred forty-nine million, one hundred eighty-nine thousand, one hundred nineteen".