20785652608 has 48 divisors (see below), whose sum is σ = 48169571400. Its totient is φ = 8908134144.

The previous prime is 20785652603. The next prime is 20785652609. The reversal of 20785652608 is 80625658702.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20785652603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1650748 + ... + 1663291.

Almost surely, 2^20785652608 is an apocalyptic number.

20785652608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20785652608 is an abundant number, since it is smaller than the sum of its proper divisors (27383918792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20785652608 is an equidigital number, since it uses as much as digits as its factorization.

20785652608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314067 (or 3314048 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 20785652608 in words is "twenty billion, seven hundred eighty-five million, six hundred fifty-two thousand, six hundred eight".