213147037633 has 2 divisors, whose sum is σ = 213147037634. Its totient is φ = 213147037632.

The previous prime is 213147037541. The next prime is 213147037643. The reversal of 213147037633 is 336730741312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212421435664 + 725601969 = 460892^2 + 26937^2 .

It is a cyclic number.

It is not a de Polignac number, because 213147037633 - 2³³ = 204557103041 is a prime.

It is not a weakly prime, because it can be changed into another prime (213147037643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106573518816 + 106573518817.

It is an arithmetic number, because the mean of its divisors is an integer number (106573518817).

Almost surely, 2^213147037633 is an apocalyptic number.

It is an amenable number.

213147037633 is a deficient number, since it is larger than the sum of its proper divisors (1).

213147037633 is an equidigital number, since it uses as much as digits as its factorization.

213147037633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 40.

Adding to 213147037633 its reverse (336730741312), we get a palindrome (549877778945).

The spelling of 213147037633 in words is "two hundred thirteen billion, one hundred forty-seven million, thirty-seven thousand, six hundred thirty-three".