55649455511866 has 8 divisors (see below), whose sum is σ = 83478931297524. Its totient is φ = 27823145079360.

The previous prime is 55649455511863. The next prime is 55649455511891. The reversal of 55649455511866 is 66811555494655.

It can be written as a sum of positive squares in 2 ways, for example, as 54981794930841 + 667660581025 = 7414971^2 + 817105^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 55649455511795 and 55649455511804.

It is not an unprimeable number, because it can be changed into a prime (55649455511863) 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, 791294335 + ... + 791364658.

Almost surely, 2^{55649455511866} is an apocalyptic number.

55649455511866 is a deficient number, since it is larger than the sum of its proper divisors (27829475785658).

55649455511866 is a wasteful number, since it uses less digits than its factorization.

55649455511866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582676576.

The product of its digits is 777600000, while the sum is 70.

The spelling of 55649455511866 in words is "fifty-five trillion, six hundred forty-nine billion, four hundred fifty-five million, five hundred eleven thousand, eight hundred sixty-six".