55536866961 has 16 divisors (see below), whose sum is σ = 74239572288. Its totient is φ = 36929433600.

The previous prime is 55536866941. The next prime is 55536866977. The reversal of 55536866961 is 16966863555.

It is not a de Polignac number, because 55536866961 - 2⁵ = 55536866929 is a prime.

It is a super-3 number, since 3×55536866961³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55536866895 and 55536866904.

It is not an unprimeable number, because it can be changed into a prime (55536866921) 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 15 ways as a sum of consecutive naturals, for example, 4560721 + ... + 4572881.

It is an arithmetic number, because the mean of its divisors is an integer number (4639973268).

Almost surely, 2^55536866961 is an apocalyptic number.

It is an amenable number.

55536866961 is a deficient number, since it is larger than the sum of its proper divisors (18702705327).

55536866961 is a wasteful number, since it uses less digits than its factorization.

55536866961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15952.

The product of its digits is 34992000, while the sum is 60.

The spelling of 55536866961 in words is "fifty-five billion, five hundred thirty-six million, eight hundred sixty-six thousand, nine hundred sixty-one".