551531819854 has 4 divisors (see below), whose sum is σ = 827297729784. Its totient is φ = 275765909926.

The previous prime is 551531819849. The next prime is 551531819903. The reversal of 551531819854 is 458918135155.

551531819854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×551531819854² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551531819795 and 551531819804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137882954962 + ... + 137882954965.

It is an arithmetic number, because the mean of its divisors is an integer number (206824432446).

Almost surely, 2^551531819854 is an apocalyptic number.

551531819854 is a deficient number, since it is larger than the sum of its proper divisors (275765909930).

551531819854 is a wasteful number, since it uses less digits than its factorization.

551531819854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275765909929.

The product of its digits is 4320000, while the sum is 55.

The spelling of 551531819854 in words is "five hundred fifty-one billion, five hundred thirty-one million, eight hundred nineteen thousand, eight hundred fifty-four".