20007689071 has 4 divisors (see below), whose sum is σ = 20019692952. Its totient is φ = 19995685192.

The previous prime is 20007689059. The next prime is 20007689089. The reversal of 20007689071 is 17098670002.

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 20007689071 - 2¹¹ = 20007687023 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 (20007609071) 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, 5999440 + ... + 6002773.

It is an arithmetic number, because the mean of its divisors is an integer number (5004923238).

Almost surely, 2^20007689071 is an apocalyptic number.

20007689071 is a deficient number, since it is larger than the sum of its proper divisors (12003881).

20007689071 is a wasteful number, since it uses less digits than its factorization.

20007689071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12003880.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 20007689071 in words is "twenty billion, seven million, six hundred eighty-nine thousand, seventy-one".