213104655766 has 12 divisors (see below), whose sum is σ = 337366512972. Its totient is φ = 100944310284.

The previous prime is 213104655721. The next prime is 213104655781. The reversal of 213104655766 is 667556401312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147578680 + ... + 147580123.

It is an arithmetic number, because the mean of its divisors is an integer number (28113876081).

Almost surely, 2^213104655766 is an apocalyptic number.

213104655766 is a deficient number, since it is larger than the sum of its proper divisors (124261857206).

213104655766 is a wasteful number, since it uses less digits than its factorization.

213104655766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295158843 (or 295158824 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

It can be divided in two parts, 2131046 and 55766, that added together give a palindrome (2186812).

The spelling of 213104655766 in words is "two hundred thirteen billion, one hundred four million, six hundred fifty-five thousand, seven hundred sixty-six".