216376226371761 has 16 divisors (see below), whose sum is σ = 306373417880640. Its totient is φ = 135449300528640.

The previous prime is 216376226371741. The next prime is 216376226371769. The reversal of 216376226371761 is 167173622673612.

It is a de Polignac number, because none of the positive numbers 2^k-216376226371761 is a prime.

It is a super-2 number, since 2×216376226371761² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216376226371695 and 216376226371704.

It is not an unprimeable number, because it can be changed into a prime (216376226371769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16796781820 + ... + 16796794701.

It is an arithmetic number, because the mean of its divisors is an integer number (19148338617540).

Almost surely, 2^{216376226371761} is an apocalyptic number.

It is an amenable number.

216376226371761 is a deficient number, since it is larger than the sum of its proper divisors (89997191508879).

216376226371761 is a wasteful number, since it uses less digits than its factorization.

216376226371761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33593576656.

The product of its digits is 32006016, while the sum is 60.

The spelling of 216376226371761 in words is "two hundred sixteen trillion, three hundred seventy-six billion, two hundred twenty-six million, three hundred seventy-one thousand, seven hundred sixty-one".