56477128184217 has 48 divisors (see below), whose sum is σ = 89563301429056. Its totient is φ = 34082118576000.

The previous prime is 56477128184179. The next prime is 56477128184251. The reversal of 56477128184217 is 71248182177465.

It is a happy number.

56477128184217 is a `hidden beast` number, since 5 + 6 + 4 + 77 + 128 + 18 + 421 + 7 = 666.

It is not a de Polignac number, because 56477128184217 - 2⁶ = 56477128184153 is a prime.

It is a super-2 number, since 2×56477128184217² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56477128174217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9591259 + ... + 14315952.

Almost surely, 2^{56477128184217} is an apocalyptic number.

It is an amenable number.

56477128184217 is a deficient number, since it is larger than the sum of its proper divisors (33086173244839).

56477128184217 is a wasteful number, since it uses less digits than its factorization.

56477128184217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23907622 (or 23907619 counting only the distinct ones).

The product of its digits is 42147840, while the sum is 63.

The spelling of 56477128184217 in words is "fifty-six trillion, four hundred seventy-seven billion, one hundred twenty-eight million, one hundred eighty-four thousand, two hundred seventeen".