354045345140881 has 4 divisors (see below), whose sum is σ = 374871541913892. Its totient is φ = 333219148367872.

The previous prime is 354045345140873. The next prime is 354045345140899. The reversal of 354045345140881 is 188041543540453.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 273950166073600 + 80095179067281 = 16551440^2 + 8949591^2 .

It is a cyclic number.

It is not a de Polignac number, because 354045345140881 - 2³ = 354045345140873 is a prime.

It is a super-2 number, since 2×354045345140881² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354045345140581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10413098386480 + ... + 10413098386513.

It is an arithmetic number, because the mean of its divisors is an integer number (93717885478473).

Almost surely, 2^{354045345140881} is an apocalyptic number.

It is an amenable number.

354045345140881 is a deficient number, since it is larger than the sum of its proper divisors (20826196773011).

354045345140881 is a wasteful number, since it uses less digits than its factorization.

354045345140881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20826196773010.

The product of its (nonzero) digits is 18432000, while the sum is 55.

The spelling of 354045345140881 in words is "three hundred fifty-four trillion, forty-five billion, three hundred forty-five million, one hundred forty thousand, eight hundred eighty-one".