56217127502111 has 16 divisors (see below), whose sum is σ = 58128386980608. Its totient is φ = 54331621099200.

The previous prime is 56217127502077. The next prime is 56217127502153. The reversal of 56217127502111 is 11120572171265.

It is a cyclic number.

It is not a de Polignac number, because 56217127502111 - 2¹⁸ = 56217127239967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56217127502161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145415876 + ... + 145801958.

It is an arithmetic number, because the mean of its divisors is an integer number (3633024186288).

Almost surely, 2^{56217127502111} is an apocalyptic number.

56217127502111 is a deficient number, since it is larger than the sum of its proper divisors (1911259478497).

56217127502111 is a wasteful number, since it uses less digits than its factorization.

56217127502111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419422.

The product of its (nonzero) digits is 58800, while the sum is 41.

Adding to 56217127502111 its reverse (11120572171265), we get a palindrome (67337699673376).

The spelling of 56217127502111 in words is "fifty-six trillion, two hundred seventeen billion, one hundred twenty-seven million, five hundred two thousand, one hundred eleven".