55359669861 has 16 divisors (see below), whose sum is σ = 82099177600. Its totient is φ = 36868263264.

The previous prime is 55359669853. The next prime is 55359669863. The reversal of 55359669861 is 16896695355.

55359669861 is a `hidden beast` number, since 5 + 535 + 9 + 6 + 6 + 98 + 6 + 1 = 666.

55359669861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55359669861 - 2³ = 55359669853 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 (55359669863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1034056 + ... + 1086273.

It is an arithmetic number, because the mean of its divisors is an integer number (5131198600).

Almost surely, 2^55359669861 is an apocalyptic number.

It is an amenable number.

55359669861 is a deficient number, since it is larger than the sum of its proper divisors (26739507739).

55359669861 is a wasteful number, since it uses less digits than its factorization.

55359669861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121305 (or 2121299 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 63.

The spelling of 55359669861 in words is "fifty-five billion, three hundred fifty-nine million, six hundred sixty-nine thousand, eight hundred sixty-one".