20959465983 has 16 divisors (see below), whose sum is σ = 28679878656. Its totient is φ = 13610463840.

The previous prime is 20959465951. The next prime is 20959465987. The reversal of 20959465983 is 38956495902.

It is not a de Polignac number, because 20959465983 - 2⁵ = 20959465951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20959465987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537135 + ... + 574832.

It is an arithmetic number, because the mean of its divisors is an integer number (1792492416).

Almost surely, 2^20959465983 is an apocalyptic number.

20959465983 is a deficient number, since it is larger than the sum of its proper divisors (7720412673).

20959465983 is a wasteful number, since it uses less digits than its factorization.

20959465983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112134.

The product of its (nonzero) digits is 20995200, while the sum is 60.

The spelling of 20959465983 in words is "twenty billion, nine hundred fifty-nine million, four hundred sixty-five thousand, nine hundred eighty-three".