20202391405689 has 8 divisors (see below), whose sum is σ = 26936554180800. Its totient is φ = 13468244783856.

The previous prime is 20202391405639. The next prime is 20202391405739. The reversal of 20202391405689 is 98650419320202.

It is an interprime number because it is at equal distance from previous prime (20202391405639) and next prime (20202391405739).

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

It is not a de Polignac number, because 20202391405689 - 2¹¹ = 20202391403641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20202391405619) 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, 733797 + ... + 6398690.

It is an arithmetic number, because the mean of its divisors is an integer number (3367069272600).

Almost surely, 2^{20202391405689} is an apocalyptic number.

It is an amenable number.

20202391405689 is a deficient number, since it is larger than the sum of its proper divisors (6734162775111).

20202391405689 is an equidigital number, since it uses as much as digits as its factorization.

20202391405689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8076639.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 20202391405689 in words is "twenty trillion, two hundred two billion, three hundred ninety-one million, four hundred five thousand, six hundred eighty-nine".