209045392955 has 16 divisors (see below), whose sum is σ = 291390677184. Its totient is φ = 140995486080.

The previous prime is 209045392949. The next prime is 209045392979. The reversal of 209045392955 is 559293540902.

It is not a de Polignac number, because 209045392955 - 2²⁶ = 208978284091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209045392897 and 209045392906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48954632 + ... + 48958901.

It is an arithmetic number, because the mean of its divisors is an integer number (18211917324).

Almost surely, 2^209045392955 is an apocalyptic number.

209045392955 is a deficient number, since it is larger than the sum of its proper divisors (82345284229).

209045392955 is an equidigital number, since it uses as much as digits as its factorization.

209045392955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97913606.

The product of its (nonzero) digits is 4374000, while the sum is 53.

The spelling of 209045392955 in words is "two hundred nine billion, forty-five million, three hundred ninety-two thousand, nine hundred fifty-five".