20835249960 has 128 divisors (see below), whose sum is σ = 72501534720. Its totient is φ = 4691250432.

The previous prime is 20835249949. The next prime is 20835249973. The reversal of 20835249960 is 6994253802.

It is a happy number.

It is a super-3 number, since 3×20835249960³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128824 + ... + 241383.

It is an arithmetic number, because the mean of its divisors is an integer number (566418240).

Almost surely, 2^20835249960 is an apocalyptic number.

20835249960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20835249960 is an abundant number, since it is smaller than the sum of its proper divisors (51666284760).

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

20835249960 is a wasteful number, since it uses less digits than its factorization.

20835249960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370295 (or 370291 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 20835249960 in words is "twenty billion, eight hundred thirty-five million, two hundred forty-nine thousand, nine hundred sixty".