20783657082 has 32 divisors (see below), whose sum is σ = 42062114304. Its totient is φ = 6845644800.

The previous prime is 20783657039. The next prime is 20783657117. The reversal of 20783657082 is 28075638702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345207 + ... + 400917.

It is an arithmetic number, because the mean of its divisors is an integer number (1314441072).

Almost surely, 2^20783657082 is an apocalyptic number.

20783657082 is an abundant number, since it is smaller than the sum of its proper divisors (21278457222).

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

20783657082 is a wasteful number, since it uses less digits than its factorization.

20783657082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56454.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 20783657082 in words is "twenty billion, seven hundred eighty-three million, six hundred fifty-seven thousand, eighty-two".