215043980809 has 16 divisors (see below), whose sum is σ = 251013777408. Its totient is φ = 180387122832.

The previous prime is 215043980783. The next prime is 215043980813. The reversal of 215043980809 is 908089340512.

It is not a de Polignac number, because 215043980809 - 2⁷ = 215043980681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215043980819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6612142 + ... + 6644584.

It is an arithmetic number, because the mean of its divisors is an integer number (15688361088).

Almost surely, 2^215043980809 is an apocalyptic number.

It is an amenable number.

215043980809 is a deficient number, since it is larger than the sum of its proper divisors (35969796599).

215043980809 is a wasteful number, since it uses less digits than its factorization.

215043980809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52644.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 215043980809 in words is "two hundred fifteen billion, forty-three million, nine hundred eighty thousand, eight hundred nine".