201145137805 has 8 divisors (see below), whose sum is σ = 241448248800. Its totient is φ = 160866721296.

The previous prime is 201145137737. The next prime is 201145137859. The reversal of 201145137805 is 508731541102.

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 201145137805 - 2¹⁵ = 201145105037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6155695 + ... + 6188284.

It is an arithmetic number, because the mean of its divisors is an integer number (30181031100).

Almost surely, 2^201145137805 is an apocalyptic number.

It is an amenable number.

201145137805 is a deficient number, since it is larger than the sum of its proper divisors (40303110995).

201145137805 is a wasteful number, since it uses less digits than its factorization.

201145137805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12347243.

The product of its (nonzero) digits is 33600, while the sum is 37.

Adding to 201145137805 its reverse (508731541102), we get a palindrome (709876678907).

The spelling of 201145137805 in words is "two hundred one billion, one hundred forty-five million, one hundred thirty-seven thousand, eight hundred five".