550681391798 has 4 divisors (see below), whose sum is σ = 826022087700. Its totient is φ = 275340695898.

The previous prime is 550681391759. The next prime is 550681391801. The reversal of 550681391798 is 897193186055.

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

It is a self number, because there is not a number n which added to its sum of digits gives 550681391798.

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, 137670347948 + ... + 137670347951.

It is an arithmetic number, because the mean of its divisors is an integer number (206505521925).

Almost surely, 2^550681391798 is an apocalyptic number.

550681391798 is a deficient number, since it is larger than the sum of its proper divisors (275340695902).

550681391798 is a wasteful number, since it uses less digits than its factorization.

550681391798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275340695901.

The product of its (nonzero) digits is 16329600, while the sum is 62.

The spelling of 550681391798 in words is "five hundred fifty billion, six hundred eighty-one million, three hundred ninety-one thousand, seven hundred ninety-eight".