550721641454 has 4 divisors (see below), whose sum is σ = 826082462184. Its totient is φ = 275360820726.

The previous prime is 550721641453. The next prime is 550721641489. The reversal of 550721641454 is 454146127055.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550721641453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137680410362 + ... + 137680410365.

It is an arithmetic number, because the mean of its divisors is an integer number (206520615546).

Almost surely, 2^550721641454 is an apocalyptic number.

550721641454 is a deficient number, since it is larger than the sum of its proper divisors (275360820730).

550721641454 is a wasteful number, since it uses less digits than its factorization.

550721641454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275360820729.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 550721641454 in words is "five hundred fifty billion, seven hundred twenty-one million, six hundred forty-one thousand, four hundred fifty-four".