215153313673 has 2 divisors, whose sum is σ = 215153313674. Its totient is φ = 215153313672.

The previous prime is 215153313653. The next prime is 215153313751. The reversal of 215153313673 is 376313351512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215047367824 + 105945849 = 463732^2 + 10293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215153313673 is a prime.

It is not a weakly prime, because it can be changed into another prime (215153313643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107576656836 + 107576656837.

It is an arithmetic number, because the mean of its divisors is an integer number (107576656837).

Almost surely, 2^215153313673 is an apocalyptic number.

It is an amenable number.

215153313673 is a deficient number, since it is larger than the sum of its proper divisors (1).

215153313673 is an equidigital number, since it uses as much as digits as its factorization.

215153313673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 40.

The spelling of 215153313673 in words is "two hundred fifteen billion, one hundred fifty-three million, three hundred thirteen thousand, six hundred seventy-three".