20216161162546 has 16 divisors (see below), whose sum is σ = 32108107174200. Its totient is φ = 9513461975040.

The previous prime is 20216161162537. The next prime is 20216161162553. The reversal of 20216161162546 is 64526116161202.

It can be written as a sum of positive squares in 4 ways, for example, as 18409720329025 + 1806440833521 = 4290655^2 + 1344039^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19356730 + ... + 20374378.

Almost surely, 2^{20216161162546} is an apocalyptic number.

20216161162546 is a deficient number, since it is larger than the sum of its proper divisors (11891946011654).

20216161162546 is a wasteful number, since it uses less digits than its factorization.

20216161162546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601949.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 20216161162546 in words is "twenty trillion, two hundred sixteen billion, one hundred sixty-one million, one hundred sixty-two thousand, five hundred forty-six".