201255453613 has 4 divisors (see below), whose sum is σ = 201261482460. Its totient is φ = 201249424768.

The previous prime is 201255453611. The next prime is 201255453631. The reversal of 201255453613 is 316354552102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316354552102 = 2 ⋅158177276051.

It can be written as a sum of positive squares in 2 ways, for example, as 16894280484 + 184361173129 = 129978^2 + 429373^2 .

It is a cyclic number.

It is not a de Polignac number, because 201255453613 - 2¹ = 201255453611 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 (201255453611) 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, 2964070 + ... + 3031207.

It is an arithmetic number, because the mean of its divisors is an integer number (50315370615).

Almost surely, 2^201255453613 is an apocalyptic number.

It is an amenable number.

201255453613 is a deficient number, since it is larger than the sum of its proper divisors (6028847).

201255453613 is an equidigital number, since it uses as much as digits as its factorization.

201255453613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028846.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 201255453613 in words is "two hundred one billion, two hundred fifty-five million, four hundred fifty-three thousand, six hundred thirteen".