56877721320217 has 8 divisors (see below), whose sum is σ = 65294603849216. Its totient is φ = 48533712233472.

The previous prime is 56877721320131. The next prime is 56877721320239. The reversal of 56877721320217 is 71202312777865.

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 56877721320217 - 2¹⁵ = 56877721287449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56877721320257) 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, 18218358888 + ... + 18218362009.

It is an arithmetic number, because the mean of its divisors is an integer number (8161825481152).

Almost surely, 2^{56877721320217} is an apocalyptic number.

It is an amenable number.

56877721320217 is a deficient number, since it is larger than the sum of its proper divisors (8416882528999).

56877721320217 is a wasteful number, since it uses less digits than its factorization.

56877721320217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36436721127.

The product of its (nonzero) digits is 13829760, while the sum is 58.

The spelling of 56877721320217 in words is "fifty-six trillion, eight hundred seventy-seven billion, seven hundred twenty-one million, three hundred twenty thousand, two hundred seventeen".