20294731659 has 8 divisors (see below), whose sum is σ = 27503243152. Its totient is φ = 13308020640.

The previous prime is 20294731621. The next prime is 20294731673. The reversal of 20294731659 is 95613749202.

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

It is not a de Polignac number, because 20294731659 - 2⁷ = 20294731531 is a prime.

It is a super-2 number, since 2×20294731659² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20294731159) 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, 55449904 + ... + 55450269.

It is an arithmetic number, because the mean of its divisors is an integer number (3437905394).

Almost surely, 2^20294731659 is an apocalyptic number.

20294731659 is a deficient number, since it is larger than the sum of its proper divisors (7208511493).

20294731659 is a wasteful number, since it uses less digits than its factorization.

20294731659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110900237.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 20294731659 in words is "twenty billion, two hundred ninety-four million, seven hundred thirty-one thousand, six hundred fifty-nine".