20505953082 has 16 divisors (see below), whose sum is σ = 41157859392. Its totient is φ = 6810992160.

The previous prime is 20505953057. The next prime is 20505953087. The reversal of 20505953082 is 28035950502.

It is a super-2 number, since 2×20505953082² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20505953082.

It is not an unprimeable number, because it can be changed into a prime (20505953087) 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, 6079558 + ... + 6082929.

It is an arithmetic number, because the mean of its divisors is an integer number (2572366212).

Almost surely, 2^20505953082 is an apocalyptic number.

20505953082 is an abundant number, since it is smaller than the sum of its proper divisors (20651906310).

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

20505953082 is a wasteful number, since it uses less digits than its factorization.

20505953082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162773.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 20505953082 in words is "twenty billion, five hundred five million, nine hundred fifty-three thousand, eighty-two".