20690051003 has 4 divisors (see below), whose sum is σ = 20710081128. Its totient is φ = 20670020880.

The previous prime is 20690050993. The next prime is 20690051027. The reversal of 20690051003 is 30015009602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20690051003 - 2⁶ = 20690050939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20690051033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10013513 + ... + 10015578.

It is an arithmetic number, because the mean of its divisors is an integer number (5177520282).

Almost surely, 2^20690051003 is an apocalyptic number.

20690051003 is a deficient number, since it is larger than the sum of its proper divisors (20030125).

20690051003 is a wasteful number, since it uses less digits than its factorization.

20690051003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20030124.

The product of its (nonzero) digits is 1620, while the sum is 26.

The spelling of 20690051003 in words is "twenty billion, six hundred ninety million, fifty-one thousand, three".