2215011553646 has 32 divisors (see below), whose sum is σ = 3376693267200. Its totient is φ = 1089518189760.

The previous prime is 2215011553609. The next prime is 2215011553739. The reversal of 2215011553646 is 6463551105122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125994485 + ... + 126012063.

It is an arithmetic number, because the mean of its divisors is an integer number (105521664600).

Almost surely, 2^{2215011553646} is an apocalyptic number.

2215011553646 is a deficient number, since it is larger than the sum of its proper divisors (1161681713554).

2215011553646 is a wasteful number, since it uses less digits than its factorization.

2215011553646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19544.

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 2215011553646 its reverse (6463551105122), we get a palindrome (8678562658768).

The spelling of 2215011553646 in words is "two trillion, two hundred fifteen billion, eleven million, five hundred fifty-three thousand, six hundred forty-six".