20245106985 has 8 divisors (see below), whose sum is σ = 32392171200. Its totient is φ = 10797390384.

The previous prime is 20245106941. The next prime is 20245107017. The reversal of 20245106985 is 58960154202.

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

It is not a de Polignac number, because 20245106985 - 2¹¹ = 20245104937 is a prime.

It is a super-3 number, since 3×20245106985³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674836885 + ... + 674836914.

It is an arithmetic number, because the mean of its divisors is an integer number (4049021400).

Almost surely, 2^20245106985 is an apocalyptic number.

It is an amenable number.

20245106985 is a deficient number, since it is larger than the sum of its proper divisors (12147064215).

20245106985 is a wasteful number, since it uses less digits than its factorization.

20245106985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349673807.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 20245106985 in words is "twenty billion, two hundred forty-five million, one hundred six thousand, nine hundred eighty-five".