551056161063 has 8 divisors (see below), whose sum is σ = 735335523568. Its totient is φ = 367073786304.

The previous prime is 551056161013. The next prime is 551056161091. The reversal of 551056161063 is 360161650155.

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

It is not a de Polignac number, because 551056161063 - 2²⁹ = 550519290151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551056161013) 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, 74242606 + ... + 74250027.

It is an arithmetic number, because the mean of its divisors is an integer number (91916940446).

Almost surely, 2^551056161063 is an apocalyptic number.

551056161063 is a deficient number, since it is larger than the sum of its proper divisors (184279362505).

551056161063 is a wasteful number, since it uses less digits than its factorization.

551056161063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148493873.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 551056161063 in words is "five hundred fifty-one billion, fifty-six million, one hundred sixty-one thousand, sixty-three".