551616660155 has 8 divisors (see below), whose sum is σ = 722116355184. Its totient is φ = 401175752800.

The previous prime is 551616660073. The next prime is 551616660157. The reversal of 551616660155 is 551066616155.

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

It is not a de Polignac number, because 551616660155 - 2⁸ = 551616659899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551616660157) 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 in 7 ways as a sum of consecutive naturals, for example, 5014696856 + ... + 5014696965.

It is an arithmetic number, because the mean of its divisors is an integer number (90264544398).

Almost surely, 2^551616660155 is an apocalyptic number.

551616660155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551616660155 is a deficient number, since it is larger than the sum of its proper divisors (170499695029).

551616660155 is a wasteful number, since it uses less digits than its factorization.

551616660155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10029393837.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 551616660155 in words is "five hundred fifty-one billion, six hundred sixteen million, six hundred sixty thousand, one hundred fifty-five".