261432063211066 has 32 divisors (see below), whose sum is σ = 428626921844736. Its totient is φ = 118602489870000.

The previous prime is 261432063211063. The next prime is 261432063211153. The reversal of 261432063211066 is 660112360234162.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (261432063211061) 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, 481266151 + ... + 481809061.

It is an arithmetic number, because the mean of its divisors is an integer number (13394591307648).

Almost surely, 2^{261432063211066} is an apocalyptic number.

261432063211066 is a deficient number, since it is larger than the sum of its proper divisors (167194858633670).

261432063211066 is a wasteful number, since it uses less digits than its factorization.

261432063211066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585298.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 261432063211066 in words is "two hundred sixty-one trillion, four hundred thirty-two billion, sixty-three million, two hundred eleven thousand, sixty-six".