55612685720857 has 8 divisors (see below), whose sum is σ = 56648040417000. Its totient is φ = 54586453092864.

The previous prime is 55612685720803. The next prime is 55612685720903. The reversal of 55612685720857 is 75802758621655.

It can be written as a sum of positive squares in 4 ways, for example, as 12151840430601 + 43460845290256 = 3485949^2 + 6592484^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55612685720857 - 2³⁵ = 55578325982489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55612685720792 and 55612685720801.

It is not an unprimeable number, because it can be changed into a prime (55612685729857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2280504732 + ... + 2280529117.

It is an arithmetic number, because the mean of its divisors is an integer number (7081005052125).

Almost surely, 2^{55612685720857} is an apocalyptic number.

It is an amenable number.

55612685720857 is a deficient number, since it is larger than the sum of its proper divisors (1035354696143).

55612685720857 is a wasteful number, since it uses less digits than its factorization.

55612685720857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561034075.

The product of its (nonzero) digits is 282240000, while the sum is 67.

The spelling of 55612685720857 in words is "fifty-five trillion, six hundred twelve billion, six hundred eighty-five million, seven hundred twenty thousand, eight hundred fifty-seven".