215354542454741 has 2 divisors, whose sum is σ = 215354542454742. Its totient is φ = 215354542454740.

The previous prime is 215354542454659. The next prime is 215354542454743. The reversal of 215354542454741 is 147454245453512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139765689640516 + 75588852814225 = 11822254^2 + 8694185^2 .

It is a cyclic number.

It is not a de Polignac number, because 215354542454741 - 2¹⁰ = 215354542453717 is a prime.

Together with 215354542454743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215354542454743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107677271227370 + 107677271227371.

It is an arithmetic number, because the mean of its divisors is an integer number (107677271227371).

Almost surely, 2^{215354542454741} is an apocalyptic number.

It is an amenable number.

215354542454741 is a deficient number, since it is larger than the sum of its proper divisors (1).

215354542454741 is an equidigital number, since it uses as much as digits as its factorization.

215354542454741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760000, while the sum is 56.

The spelling of 215354542454741 in words is "two hundred fifteen trillion, three hundred fifty-four billion, five hundred forty-two million, four hundred fifty-four thousand, seven hundred forty-one".