20085219792 has 90 divisors (see below), whose sum is σ = 61785389666. Its totient is φ = 6086424960.

The previous prime is 20085219787. The next prime is 20085219793. The reversal of 20085219792 is 29791258002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16665777216 + 3419442576 = 129096^2 + 58476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20085219793) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 558943 + ... + 593790.

Almost surely, 2^20085219792 is an apocalyptic number.

20085219792 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20085219792 is an abundant number, since it is smaller than the sum of its proper divisors (41700169874).

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

20085219792 is a wasteful number, since it uses less digits than its factorization.

20085219792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152769 (or 1152749 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 20085219792 in words is "twenty billion, eighty-five million, two hundred nineteen thousand, seven hundred ninety-two".