20570240867 has 8 divisors (see below), whose sum is σ = 23164142592. Its totient is φ = 18096985800.

The previous prime is 20570240857. The next prime is 20570240891. The reversal of 20570240867 is 76804207502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20570240867 - 2²⁰ = 20569192291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20570240837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30161303 + ... + 30161984.

It is an arithmetic number, because the mean of its divisors is an integer number (2895517824).

Almost surely, 2^20570240867 is an apocalyptic number.

20570240867 is a deficient number, since it is larger than the sum of its proper divisors (2593901725).

20570240867 is a wasteful number, since it uses less digits than its factorization.

20570240867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60323329.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 20570240867 in words is "twenty billion, five hundred seventy million, two hundred forty thousand, eight hundred sixty-seven".