213153556433 has 2 divisors, whose sum is σ = 213153556434. Its totient is φ = 213153556432.

The previous prime is 213153556409. The next prime is 213153556463. The reversal of 213153556433 is 334655351312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200299212304 + 12854344129 = 447548^2 + 113377^2 .

It is a cyclic number.

It is not a de Polignac number, because 213153556433 - 2²⁰ = 213152507857 is a prime.

It is a super-2 number, since 2×213153556433² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213153556403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106576778216 + 106576778217.

It is an arithmetic number, because the mean of its divisors is an integer number (106576778217).

Almost surely, 2^213153556433 is an apocalyptic number.

It is an amenable number.

213153556433 is a deficient number, since it is larger than the sum of its proper divisors (1).

213153556433 is an equidigital number, since it uses as much as digits as its factorization.

213153556433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486000, while the sum is 41.

The spelling of 213153556433 in words is "two hundred thirteen billion, one hundred fifty-three million, five hundred fifty-six thousand, four hundred thirty-three".