20381658071 has 16 divisors (see below), whose sum is σ = 22356165888. Its totient is φ = 18497740800.

The previous prime is 20381658049. The next prime is 20381658083. The reversal of 20381658071 is 17085618302.

It is not a de Polignac number, because 20381658071 - 2¹⁰ = 20381657047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20381658091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79271 + ... + 216903.

It is an arithmetic number, because the mean of its divisors is an integer number (1397260368).

Almost surely, 2^20381658071 is an apocalyptic number.

20381658071 is a deficient number, since it is larger than the sum of its proper divisors (1974507817).

20381658071 is a wasteful number, since it uses less digits than its factorization.

20381658071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137962.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 20381658071 in words is "twenty billion, three hundred eighty-one million, six hundred fifty-eight thousand, seventy-one".