20354192345 has 8 divisors (see below), whose sum is σ = 24885880776. Its totient is φ = 15976120576.

The previous prime is 20354192291. The next prime is 20354192351. The reversal of 20354192345 is 54329145302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4633797184 + 15720395161 = 68072^2 + 125381^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20354192345 - 2³⁰ = 19280450521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20354192299 and 20354192308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38403872 + ... + 38404401.

It is an arithmetic number, because the mean of its divisors is an integer number (3110735097).

Almost surely, 2^20354192345 is an apocalyptic number.

It is an amenable number.

20354192345 is a deficient number, since it is larger than the sum of its proper divisors (4531688431).

20354192345 is an equidigital number, since it uses as much as digits as its factorization.

20354192345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76808331.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 20354192345 in words is "twenty billion, three hundred fifty-four million, one hundred ninety-two thousand, three hundred forty-five".