261441373020011 has 8 divisors (see below), whose sum is σ = 265027812572544. Its totient is φ = 257855069977920.

The previous prime is 261441373019927. The next prime is 261441373020029. The reversal of 261441373020011 is 110020373144162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261441373020011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261441373020211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30268016 + ... + 37934621.

It is an arithmetic number, because the mean of its divisors is an integer number (33128476571568).

Almost surely, 2^{261441373020011} is an apocalyptic number.

261441373020011 is a deficient number, since it is larger than the sum of its proper divisors (3586439552533).

261441373020011 is an equidigital number, since it uses as much as digits as its factorization.

261441373020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68255221.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 261441373020011 in words is "two hundred sixty-one trillion, four hundred forty-one billion, three hundred seventy-three million, twenty thousand, eleven".