338142661861 has 4 divisors (see below), whose sum is σ = 342422948800. Its totient is φ = 333862374924.

The previous prime is 338142661811. The next prime is 338142661921. The reversal of 338142661861 is 168166241833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 338142661861 - 2³³ = 329552727269 is a prime.

It is a super-2 number, since 2×338142661861² (a number of 24 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 (338142661811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140143351 + ... + 2140143508.

It is an arithmetic number, because the mean of its divisors is an integer number (85605737200).

Almost surely, 2^338142661861 is an apocalyptic number.

It is an amenable number.

338142661861 is a deficient number, since it is larger than the sum of its proper divisors (4280286939).

338142661861 is an equidigital number, since it uses as much as digits as its factorization.

338142661861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280286938.

The product of its digits is 995328, while the sum is 49.

The spelling of 338142661861 in words is "three hundred thirty-eight billion, one hundred forty-two million, six hundred sixty-one thousand, eight hundred sixty-one".