551205310551 has 8 divisors (see below), whose sum is σ = 839931901824. Its totient is φ = 314974463160.

The previous prime is 551205310541. The next prime is 551205310577. The reversal of 551205310551 is 155013502155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 551205310551 - 2⁷ = 551205310423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551205310531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13123935945 + ... + 13123935986.

It is an arithmetic number, because the mean of its divisors is an integer number (104991487728).

Almost surely, 2^551205310551 is an apocalyptic number.

551205310551 is a deficient number, since it is larger than the sum of its proper divisors (288726591273).

551205310551 is a wasteful number, since it uses less digits than its factorization.

551205310551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26247871941.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 551205310551 in words is "five hundred fifty-one billion, two hundred five million, three hundred ten thousand, five hundred fifty-one".