201146251685 has 16 divisors (see below), whose sum is σ = 241675933824. Its totient is φ = 160716823872.

The previous prime is 201146251679. The next prime is 201146251693. The reversal of 201146251685 is 586152641102.

It is a cyclic number.

It is not a de Polignac number, because 201146251685 - 2²⁸ = 200877816229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23876384 + ... + 23884806.

It is an arithmetic number, because the mean of its divisors is an integer number (15104745864).

Almost surely, 2^201146251685 is an apocalyptic number.

It is an amenable number.

201146251685 is a deficient number, since it is larger than the sum of its proper divisors (40529682139).

201146251685 is a wasteful number, since it uses less digits than its factorization.

201146251685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13804.

The product of its (nonzero) digits is 115200, while the sum is 41.

Adding to 201146251685 its reverse (586152641102), we get a palindrome (787298892787).

The spelling of 201146251685 in words is "two hundred one billion, one hundred forty-six million, two hundred fifty-one thousand, six hundred eighty-five".