261828323111701 has 8 divisors (see below), whose sum is σ = 268234719629184. Its totient is φ = 255422895158880.

The previous prime is 261828323111699. The next prime is 261828323111737. The reversal of 261828323111701 is 107111323828162.

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

It is a cyclic number.

It is not a de Polignac number, because 261828323111701 - 2¹ = 261828323111699 is a prime.

It is a super-2 number, since 2×261828323111701² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261828323111501) 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, 241593885 + ... + 242675218.

It is an arithmetic number, because the mean of its divisors is an integer number (33529339953648).

Almost surely, 2^{261828323111701} is an apocalyptic number.

It is an amenable number.

261828323111701 is a deficient number, since it is larger than the sum of its proper divisors (6406396517483).

261828323111701 is a wasteful number, since it uses less digits than its factorization.

261828323111701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484282331.

The product of its (nonzero) digits is 193536, while the sum is 46.

Adding to 261828323111701 its reverse (107111323828162), we get a palindrome (368939646939863).

The spelling of 261828323111701 in words is "two hundred sixty-one trillion, eight hundred twenty-eight billion, three hundred twenty-three million, one hundred eleven thousand, seven hundred one".