201381387257 has 8 divisors (see below), whose sum is σ = 205358639040. Its totient is φ = 197435827120.

The previous prime is 201381387253. The next prime is 201381387341. The reversal of 201381387257 is 752783183102.

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 201381387257 - 2² = 201381387253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201381387253) 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, 7910078 + ... + 7935495.

It is an arithmetic number, because the mean of its divisors is an integer number (25669829880).

Almost surely, 2^201381387257 is an apocalyptic number.

It is an amenable number.

201381387257 is a deficient number, since it is larger than the sum of its proper divisors (3977251783).

201381387257 is a wasteful number, since it uses less digits than its factorization.

201381387257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15845823.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 201381387257 in words is "two hundred one billion, three hundred eighty-one million, three hundred eighty-seven thousand, two hundred fifty-seven".