20385856760 has 32 divisors (see below), whose sum is σ = 46198177200. Its totient is φ = 8095676160.

The previous prime is 20385856759. The next prime is 20385856763. The reversal of 20385856760 is 6765858302.

It is a junction number, because it is equal to n+sod(n) for n = 20385856699 and 20385856708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385856763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1827701 + ... + 1838820.

Almost surely, 2^20385856760 is an apocalyptic number.

20385856760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20385856760 is an abundant number, since it is smaller than the sum of its proper divisors (25812320440).

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

20385856760 is a wasteful number, since it uses less digits than its factorization.

20385856760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666671 (or 3666667 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 20385856760 in words is "twenty billion, three hundred eighty-five million, eight hundred fifty-six thousand, seven hundred sixty".