20966451783 has 8 divisors (see below), whose sum is σ = 28710817008. Its totient is φ = 13599860544.

The previous prime is 20966451767. The next prime is 20966451811. The reversal of 20966451783 is 38715466902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20966451783 - 2⁴ = 20966451767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20966451763) 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 7 ways as a sum of consecutive naturals, for example, 94443366 + ... + 94443587.

It is an arithmetic number, because the mean of its divisors is an integer number (3588852126).

It is a 1-persistent number, because it is pandigital, but 2⋅20966451783 = 41932903566 is not.

Almost surely, 2^20966451783 is an apocalyptic number.

20966451783 is a deficient number, since it is larger than the sum of its proper divisors (7744365225).

20966451783 is a wasteful number, since it uses less digits than its factorization.

20966451783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188886993.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 20966451783 in words is "twenty billion, nine hundred sixty-six million, four hundred fifty-one thousand, seven hundred eighty-three".