20137816853 has 8 divisors (see below), whose sum is σ = 25106888640. Its totient is φ = 15691805280.

The previous prime is 20137816847. The next prime is 20137816859. The reversal of 20137816853 is 35861873102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20137816847) and next prime (20137816859).

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 20137816853 - 2¹⁰ = 20137815829 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 (20137816859) 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, 130764968 + ... + 130765121.

It is an arithmetic number, because the mean of its divisors is an integer number (3138361080).

Almost surely, 2^20137816853 is an apocalyptic number.

It is an amenable number.

20137816853 is a deficient number, since it is larger than the sum of its proper divisors (4969071787).

20137816853 is a wasteful number, since it uses less digits than its factorization.

20137816853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261530107.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 20137816853 in words is "twenty billion, one hundred thirty-seven million, eight hundred sixteen thousand, eight hundred fifty-three".