20220620239945 has 16 divisors (see below), whose sum is σ = 24276088946880. Its totient is φ = 16168933767744.

The previous prime is 20220620239931. The next prime is 20220620239969. The reversal of 20220620239945 is 54993202602202.

It is a cyclic number.

It is not a de Polignac number, because 20220620239945 - 2¹¹ = 20220620237897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20220620239895 and 20220620239904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438155362 + ... + 438201508.

It is an arithmetic number, because the mean of its divisors is an integer number (1517255559180).

Almost surely, 2^{20220620239945} is an apocalyptic number.

It is an amenable number.

20220620239945 is a deficient number, since it is larger than the sum of its proper divisors (4055468706935).

20220620239945 is a wasteful number, since it uses less digits than its factorization.

20220620239945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85224.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 20220620239945 in words is "twenty trillion, two hundred twenty billion, six hundred twenty million, two hundred thirty-nine thousand, nine hundred forty-five".