355939143641 has 4 divisors (see below), whose sum is σ = 374672782800. Its totient is φ = 337205504484.

The previous prime is 355939143601. The next prime is 355939143649. The reversal of 355939143641 is 146341939553.

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 a de Polignac number, because none of the positive numbers 2^k-355939143641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (355939143649) 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, 9366819551 + ... + 9366819588.

It is an arithmetic number, because the mean of its divisors is an integer number (93668195700).

Almost surely, 2^355939143641 is an apocalyptic number.

It is an amenable number.

355939143641 is a deficient number, since it is larger than the sum of its proper divisors (18733639159).

355939143641 is a wasteful number, since it uses less digits than its factorization.

355939143641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18733639158.

The product of its digits is 5248800, while the sum is 53.

The spelling of 355939143641 in words is "three hundred fifty-five billion, nine hundred thirty-nine million, one hundred forty-three thousand, six hundred forty-one".