20354666545354 has 32 divisors (see below), whose sum is σ = 31519456480512. Its totient is φ = 9852053952000.

The previous prime is 20354666545331. The next prime is 20354666545397. The reversal of 20354666545354 is 45354566645302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87011554 + ... + 87245170.

It is an arithmetic number, because the mean of its divisors is an integer number (984983015016).

Almost surely, 2^{20354666545354} is an apocalyptic number.

20354666545354 is a deficient number, since it is larger than the sum of its proper divisors (11164789935158).

20354666545354 is a wasteful number, since it uses less digits than its factorization.

20354666545354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241902.

The product of its (nonzero) digits is 155520000, while the sum is 58.

It can be divided in two parts, 203546 and 66545354, that added together give a square (66748900 = 8170²).

The spelling of 20354666545354 in words is "twenty trillion, three hundred fifty-four billion, six hundred sixty-six million, five hundred forty-five thousand, three hundred fifty-four".