551150615566 has 8 divisors (see below), whose sum is σ = 862670528784. Its totient is φ = 263593772640.

The previous prime is 551150615557. The next prime is 551150615569. The reversal of 551150615566 is 665516051155.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 11981535121 = 551150615566 / (5 + 5 + 1 + 1 + 5 + 0 + 6 + 1 + 5 + 5 + 6 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551150615569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5990767515 + ... + 5990767606.

It is an arithmetic number, because the mean of its divisors is an integer number (107833816098).

Almost surely, 2^551150615566 is an apocalyptic number.

551150615566 is a deficient number, since it is larger than the sum of its proper divisors (311519913218).

551150615566 is a wasteful number, since it uses less digits than its factorization.

551150615566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11981535146.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 551150615566 in words is "five hundred fifty-one billion, one hundred fifty million, six hundred fifteen thousand, five hundred sixty-six".