55561746654886 has 8 divisors (see below), whose sum is σ = 83778968778624. Its totient is φ = 27635423728680.

The previous prime is 55561746654877. The next prime is 55561746654889. The reversal of 55561746654886 is 68845664716555.

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

It is a super-2 number, since 2×55561746654886² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55561746654889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72724798905 + ... + 72724799668.

It is an arithmetic number, because the mean of its divisors is an integer number (10472371097328).

Almost surely, 2^{55561746654886} is an apocalyptic number.

55561746654886 is a deficient number, since it is larger than the sum of its proper divisors (28217222123738).

55561746654886 is a wasteful number, since it uses less digits than its factorization.

55561746654886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145449598766.

The product of its digits is 5806080000, while the sum is 76.

The spelling of 55561746654886 in words is "fifty-five trillion, five hundred sixty-one billion, seven hundred forty-six million, six hundred fifty-four thousand, eight hundred eighty-six".