20885539296 has 24 divisors (see below), whose sum is σ = 54824540904. Its totient is φ = 6961846400.

The previous prime is 20885539291. The next prime is 20885539303. The reversal of 20885539296 is 69293558802.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20885539291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108778755 + ... + 108778946.

It is an arithmetic number, because the mean of its divisors is an integer number (2284355871).

Almost surely, 2^20885539296 is an apocalyptic number.

It is an amenable number.

20885539296 is an abundant number, since it is smaller than the sum of its proper divisors (33939001608).

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

20885539296 is a wasteful number, since it uses less digits than its factorization.

20885539296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217557714 (or 217557706 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 20885539296 in words is "twenty billion, eight hundred eighty-five million, five hundred thirty-nine thousand, two hundred ninety-six".