20690623801 has 24 divisors (see below), whose sum is σ = 21684988800. Its totient is φ = 19735497600.

The previous prime is 20690623799. The next prime is 20690623847. The reversal of 20690623801 is 10832609602.

It is not a de Polignac number, because 20690623801 - 2¹ = 20690623799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20690623871) 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 23 ways as a sum of consecutive naturals, for example, 22711536 + ... + 22712446.

It is an arithmetic number, because the mean of its divisors is an integer number (903541200).

Almost surely, 2^20690623801 is an apocalyptic number.

It is an amenable number.

20690623801 is a deficient number, since it is larger than the sum of its proper divisors (994364999).

20690623801 is an equidigital number, since it uses as much as digits as its factorization.

20690623801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 20690623801 in words is "twenty billion, six hundred ninety million, six hundred twenty-three thousand, eight hundred one".