20260646304 has 48 divisors (see below), whose sum is σ = 55018141920. Its totient is φ = 6520666880.

The previous prime is 20260646293. The next prime is 20260646309. The reversal of 20260646304 is 40364606202.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20260646309) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3635982 + ... + 3641549.

It is an arithmetic number, because the mean of its divisors is an integer number (1146211290).

Almost surely, 2^20260646304 is an apocalyptic number.

20260646304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20260646304 is an abundant number, since it is smaller than the sum of its proper divisors (34757495616).

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

20260646304 is a wasteful number, since it uses less digits than its factorization.

20260646304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7277573 (or 7277565 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 20260646304 in words is "twenty billion, two hundred sixty million, six hundred forty-six thousand, three hundred four".