211616562642 has 16 divisors (see below), whose sum is σ = 423239617152. Its totient is φ = 70537772240.

The previous prime is 211616562631. The next prime is 211616562667. The reversal of 211616562642 is 246265616112.

211616562642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211616562594 and 211616562603.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 222343 + ... + 687509.

It is an arithmetic number, because the mean of its divisors is an integer number (26452476072).

Almost surely, 2^211616562642 is an apocalyptic number.

211616562642 is an abundant number, since it is smaller than the sum of its proper divisors (211623054510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211616562642 is a wasteful number, since it uses less digits than its factorization.

211616562642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540993.

The product of its digits is 207360, while the sum is 42.

The spelling of 211616562642 in words is "two hundred eleven billion, six hundred sixteen million, five hundred sixty-two thousand, six hundred forty-two".