201231136453560 has 64 divisors (see below), whose sum is σ = 605841784584480. Its totient is φ = 53470669701120.

The previous prime is 201231136453541. The next prime is 201231136453577. The reversal of 201231136453560 is 65354631132102.

It is a happy 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, 2983820617 + ... + 2983888056.

Almost surely, 2^{201231136453560} is an apocalyptic number.

201231136453560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231136453560 is an abundant number, since it is smaller than the sum of its proper divisors (404610648130920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201231136453560 is a wasteful number, since it uses less digits than its factorization.

201231136453560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967708968 (or 5967708964 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

Adding to 201231136453560 its reverse (65354631132102), we get a palindrome (266585767585662).

The spelling of 201231136453560 in words is "two hundred one trillion, two hundred thirty-one billion, one hundred thirty-six million, four hundred fifty-three thousand, five hundred sixty".