551266502857 has 6 divisors (see below), whose sum is σ = 641269197258. Its totient is φ = 472514145264.

The previous prime is 551266502777. The next prime is 551266502861. The reversal of 551266502857 is 758205662155.

It can be written as a sum of positive squares in only one way, i.e., 348317153856 + 202949349001 = 590184^2 + 450499^2 .

It is a de Polignac number, because none of the positive numbers 2^k-551266502857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551266502057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5625168348 + ... + 5625168445.

It is an arithmetic number, because the mean of its divisors is an integer number (106878199543).

Almost surely, 2^551266502857 is an apocalyptic number.

It is an amenable number.

551266502857 is a deficient number, since it is larger than the sum of its proper divisors (90002694401).

551266502857 is a wasteful number, since it uses less digits than its factorization.

551266502857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11250336807 (or 11250336800 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 52.

The spelling of 551266502857 in words is "five hundred fifty-one billion, two hundred sixty-six million, five hundred two thousand, eight hundred fifty-seven".