201451456361 has 4 divisors (see below), whose sum is σ = 201453259332. Its totient is φ = 201449653392.

The previous prime is 201451456357. The next prime is 201451456417. The reversal of 201451456361 is 163654154102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31348827136 + 170102629225 = 177056^2 + 412435^2 .

It is a cyclic number.

It is not a de Polignac number, because 201451456361 - 2² = 201451456357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201451456331) 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, 721970 + ... + 961323.

It is an arithmetic number, because the mean of its divisors is an integer number (50363314833).

Almost surely, 2^201451456361 is an apocalyptic number.

It is an amenable number.

201451456361 is a deficient number, since it is larger than the sum of its proper divisors (1802971).

201451456361 is a wasteful number, since it uses less digits than its factorization.

201451456361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802970.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 201451456361 in words is "two hundred one billion, four hundred fifty-one million, four hundred fifty-six thousand, three hundred sixty-one".