20549146342 has 8 divisors (see below), whose sum is σ = 32446020600. Its totient is φ = 9733806144.

The previous prime is 20549146339. The next prime is 20549146367. The reversal of 20549146342 is 24364194502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20549146295 and 20549146304.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 270383467 + ... + 270383542.

It is an arithmetic number, because the mean of its divisors is an integer number (4055752575).

Almost surely, 2^20549146342 is an apocalyptic number.

20549146342 is a deficient number, since it is larger than the sum of its proper divisors (11896874258).

20549146342 is a wasteful number, since it uses less digits than its factorization.

20549146342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540767030.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 20549146342 in words is "twenty billion, five hundred forty-nine million, one hundred forty-six thousand, three hundred forty-two".