20653575982 has 16 divisors (see below), whose sum is σ = 33366250512. Its totient is φ = 9531624960.

The previous prime is 20653575979. The next prime is 20653575983. The reversal of 20653575982 is 28957535602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653575983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383758 + ... + 434254.

It is an arithmetic number, because the mean of its divisors is an integer number (2085390657).

Almost surely, 2^20653575982 is an apocalyptic number.

20653575982 is a deficient number, since it is larger than the sum of its proper divisors (12712674530).

20653575982 is a wasteful number, since it uses less digits than its factorization.

20653575982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66243.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 20653575982 in words is "twenty billion, six hundred fifty-three million, five hundred seventy-five thousand, nine hundred eighty-two".