213104655761 has 32 divisors (see below), whose sum is σ = 222469632000. Its totient is φ = 203997931200.

The previous prime is 213104655721. The next prime is 213104655781. The reversal of 213104655761 is 167556401312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 213104655761 - 2⁶ = 213104655697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213104655721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161564660 + ... + 161565978.

It is an arithmetic number, because the mean of its divisors is an integer number (6952176000).

Almost surely, 2^213104655761 is an apocalyptic number.

It is an amenable number.

213104655761 is a deficient number, since it is larger than the sum of its proper divisors (9364976239).

213104655761 is a wasteful number, since it uses less digits than its factorization.

213104655761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 213104655761 in words is "two hundred thirteen billion, one hundred four million, six hundred fifty-five thousand, seven hundred sixty-one".