20371703671 has 4 divisors (see below), whose sum is σ = 22223676744. Its totient is φ = 18519730600.

The previous prime is 20371703647. The next prime is 20371703699. The reversal of 20371703671 is 17630717302.

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 20371703671 - 2⁹ = 20371703159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20371703671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20371703621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925986520 + ... + 925986541.

It is an arithmetic number, because the mean of its divisors is an integer number (5555919186).

Almost surely, 2^20371703671 is an apocalyptic number.

20371703671 is a deficient number, since it is larger than the sum of its proper divisors (1851973073).

20371703671 is a wasteful number, since it uses less digits than its factorization.

20371703671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851973072.

The product of its (nonzero) digits is 37044, while the sum is 37.

The spelling of 20371703671 in words is "twenty billion, three hundred seventy-one million, seven hundred three thousand, six hundred seventy-one".