20670650785 has 8 divisors (see below), whose sum is σ = 24808850496. Its totient is φ = 16533807600.

The previous prime is 20670650779. The next prime is 20670650813. The reversal of 20670650785 is 58705607602.

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

It is not a de Polignac number, because 20670650785 - 2¹¹ = 20670648737 is a prime.

It is a super-2 number, since 2×20670650785² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 305299 + ... + 366808.

It is an arithmetic number, because the mean of its divisors is an integer number (3101106312).

Almost surely, 2^20670650785 is an apocalyptic number.

It is an amenable number.

20670650785 is a deficient number, since it is larger than the sum of its proper divisors (4138199711).

20670650785 is an equidigital number, since it uses as much as digits as its factorization.

20670650785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678263.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 20670650785 in words is "twenty billion, six hundred seventy million, six hundred fifty thousand, seven hundred eighty-five".