215465030293 has 2 divisors, whose sum is σ = 215465030294. Its totient is φ = 215465030292.

The previous prime is 215465030279. The next prime is 215465030311. The reversal of 215465030293 is 392030564512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176384880324 + 39080149969 = 419982^2 + 197687^2 .

It is a cyclic number.

It is not a de Polignac number, because 215465030293 - 2³³ = 206875095701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215465030233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107732515146 + 107732515147.

It is an arithmetic number, because the mean of its divisors is an integer number (107732515147).

Almost surely, 2^215465030293 is an apocalyptic number.

It is an amenable number.

215465030293 is a deficient number, since it is larger than the sum of its proper divisors (1).

215465030293 is an equidigital number, since it uses as much as digits as its factorization.

215465030293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 215465030293 in words is "two hundred fifteen billion, four hundred sixty-five million, thirty thousand, two hundred ninety-three".