1205923953065 has 16 divisors (see below), whose sum is σ = 1584838785600. Its totient is φ = 875434752192.

The previous prime is 1205923953043. The next prime is 1205923953067. The reversal of 1205923953065 is 5603593295021.

It is not a de Polignac number, because 1205923953065 - 2¹⁰ = 1205923952041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1205923953067) 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, 157222235 + ... + 157229904.

It is an arithmetic number, because the mean of its divisors is an integer number (99052424100).

Almost surely, 2^{1205923953065} is an apocalyptic number.

It is an amenable number.

1205923953065 is a deficient number, since it is larger than the sum of its proper divisors (378914832535).

1205923953065 is a wasteful number, since it uses less digits than its factorization.

1205923953065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314452216.

The product of its (nonzero) digits is 2187000, while the sum is 50.

The spelling of 1205923953065 in words is "one trillion, two hundred five billion, nine hundred twenty-three million, nine hundred fifty-three thousand, sixty-five".