551665001610 has 48 divisors (see below), whose sum is σ = 1483788632040. Its totient is φ = 142037884800.

The previous prime is 551665001609. The next prime is 551665001617. The reversal of 551665001610 is 16100566155.

It can be written as a sum of positive squares in 4 ways, for example, as 542047865121 + 9617136489 = 736239^2 + 98067^2 .

It is a super-2 number, since 2×551665001610² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551665001617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105680341 + ... + 105685560.

Almost surely, 2^551665001610 is an apocalyptic number.

551665001610 is an abundant number, since it is smaller than the sum of its proper divisors (932123630430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551665001610 is a wasteful number, since it uses less digits than its factorization.

551665001610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211365943 (or 211365940 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

Adding to 551665001610 its reverse (16100566155), we get a palindrome (567765567765).

The spelling of 551665001610 in words is "five hundred fifty-one billion, six hundred sixty-five million, one thousand, six hundred ten".