215012504249 has 2 divisors, whose sum is σ = 215012504250. Its totient is φ = 215012504248.

The previous prime is 215012504243. The next prime is 215012504293. The reversal of 215012504249 is 942405210512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185035044649 + 29977459600 = 430157^2 + 173140^2 .

It is a cyclic number.

It is not a de Polignac number, because 215012504249 - 2¹⁶ = 215012438713 is a prime.

It is not a weakly prime, because it can be changed into another prime (215012504243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107506252124 + 107506252125.

It is an arithmetic number, because the mean of its divisors is an integer number (107506252125).

Almost surely, 2^215012504249 is an apocalyptic number.

It is an amenable number.

215012504249 is a deficient number, since it is larger than the sum of its proper divisors (1).

215012504249 is an equidigital number, since it uses as much as digits as its factorization.

215012504249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 215012504249 in words is "two hundred fifteen billion, twelve million, five hundred four thousand, two hundred forty-nine".