354163881641 has 2 divisors, whose sum is σ = 354163881642. Its totient is φ = 354163881640.

The previous prime is 354163881629. The next prime is 354163881683. The reversal of 354163881641 is 146188361453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343466323600 + 10697558041 = 586060^2 + 103429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354163881641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354163881641.

It is not a weakly prime, because it can be changed into another prime (354163881691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177081940820 + 177081940821.

It is an arithmetic number, because the mean of its divisors is an integer number (177081940821).

Almost surely, 2^354163881641 is an apocalyptic number.

It is an amenable number.

354163881641 is a deficient number, since it is larger than the sum of its proper divisors (1).

354163881641 is an equidigital number, since it uses as much as digits as its factorization.

354163881641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 50.

The spelling of 354163881641 in words is "three hundred fifty-four billion, one hundred sixty-three million, eight hundred eighty-one thousand, six hundred forty-one".