20575977696 has 240 divisors, whose sum is σ = 62888652288. Its totient is φ = 6592492800.

The previous prime is 20575977689. The next prime is 20575977701. The reversal of 20575977696 is 69677957502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13096591 + ... + 13098161.

Almost surely, 2^20575977696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20575977696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31444326144).

20575977696 is an abundant number, since it is smaller than the sum of its proper divisors (42312674592).

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

20575977696 is a wasteful number, since it uses less digits than its factorization.

20575977696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 50009400, while the sum is 63.

The spelling of 20575977696 in words is "twenty billion, five hundred seventy-five million, nine hundred seventy-seven thousand, six hundred ninety-six".