208732321054651 has 4 divisors (see below), whose sum is σ = 208954140737904. Its totient is φ = 208510501371400.

The previous prime is 208732321054639. The next prime is 208732321054693. The reversal of 208732321054651 is 156450123237802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208732321054651 - 2¹¹ = 208732321052603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208732321054595 and 208732321054604.

It is not an unprimeable number, because it can be changed into a prime (208732321054051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110909840215 + ... + 110909842096.

It is an arithmetic number, because the mean of its divisors is an integer number (52238535184476).

Almost surely, 2^{208732321054651} is an apocalyptic number.

208732321054651 is a deficient number, since it is larger than the sum of its proper divisors (221819683253).

208732321054651 is an equidigital number, since it uses as much as digits as its factorization.

208732321054651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221819683252.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 208732321054651 in words is "two hundred eight trillion, seven hundred thirty-two billion, three hundred twenty-one million, fifty-four thousand, six hundred fifty-one".