20143682357 has 4 divisors (see below), whose sum is σ = 20159214636. Its totient is φ = 20128150080.

The previous prime is 20143682329. The next prime is 20143682369. The reversal of 20143682357 is 75328634102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10094421841 + 10049260516 = 100471^2 + 100246^2 .

It is a cyclic number.

It is not a de Polignac number, because 20143682357 - 2¹⁴ = 20143665973 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 (20143682957) 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, 7764194 + ... + 7766787.

It is an arithmetic number, because the mean of its divisors is an integer number (5039803659).

Almost surely, 2^20143682357 is an apocalyptic number.

It is an amenable number.

20143682357 is a deficient number, since it is larger than the sum of its proper divisors (15532279).

20143682357 is a wasteful number, since it uses less digits than its factorization.

20143682357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15532278.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 20143682357 in words is "twenty billion, one hundred forty-three million, six hundred eighty-two thousand, three hundred fifty-seven".