5551265251809 has 24 divisors (see below), whose sum is σ = 8294879653632. Its totient is φ = 3573792286560.

The previous prime is 5551265251801. The next prime is 5551265251853. The reversal of 5551265251809 is 9081525621555.

5551265251809 is a `hidden beast` number, since 5 + 5 + 51 + 26 + 52 + 518 + 0 + 9 = 666.

5551265251809 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5551265251809 - 2³ = 5551265251801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5551265251801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21172714 + ... + 21433299.

It is an arithmetic number, because the mean of its divisors is an integer number (345619985568).

Almost surely, 2^{5551265251809} is an apocalyptic number.

It is an amenable number.

5551265251809 is a deficient number, since it is larger than the sum of its proper divisors (2743614401823).

5551265251809 is a wasteful number, since it uses less digits than its factorization.

5551265251809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42606517 (or 42606514 counting only the distinct ones).

The product of its (nonzero) digits is 5400000, while the sum is 54.

The spelling of 5551265251809 in words is "five trillion, five hundred fifty-one billion, two hundred sixty-five million, two hundred fifty-one thousand, eight hundred nine".