2215542210646 has 16 divisors (see below), whose sum is σ = 3482194449888. Its totient is φ = 1055210428800.

The previous prime is 2215542210641. The next prime is 2215542210671. The reversal of 2215542210646 is 6460122455122.

It is a junction number, because it is equal to n+sod(n) for n = 2215542210599 and 2215542210608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215542210641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99914145 + ... + 99936316.

It is an arithmetic number, because the mean of its divisors is an integer number (217637153118).

Almost surely, 2^{2215542210646} is an apocalyptic number.

2215542210646 is a deficient number, since it is larger than the sum of its proper divisors (1266652239242).

2215542210646 is a wasteful number, since it uses less digits than its factorization.

2215542210646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199850727.

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 2215542210646 its reverse (6460122455122), we get a palindrome (8675664665768).

The spelling of 2215542210646 in words is "two trillion, two hundred fifteen billion, five hundred forty-two million, two hundred ten thousand, six hundred forty-six".