215058713491 has 2 divisors, whose sum is σ = 215058713492. Its totient is φ = 215058713490.

The previous prime is 215058713461. The next prime is 215058713497. The reversal of 215058713491 is 194317850512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215058713491 - 2⁵ = 215058713459 is a prime.

It is not a weakly prime, because it can be changed into another prime (215058713497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107529356745 + 107529356746.

It is an arithmetic number, because the mean of its divisors is an integer number (107529356746).

Almost surely, 2^215058713491 is an apocalyptic number.

215058713491 is a deficient number, since it is larger than the sum of its proper divisors (1).

215058713491 is an equidigital number, since it uses as much as digits as its factorization.

215058713491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 215058713491 in words is "two hundred fifteen billion, fifty-eight million, seven hundred thirteen thousand, four hundred ninety-one".