201451222615 has 8 divisors (see below), whose sum is σ = 241817769360. Its totient is φ = 161110109952.

The previous prime is 201451222591. The next prime is 201451222619. The reversal of 201451222615 is 516222154102.

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 201451222615 - 2⁹ = 201451222103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201451222619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6341089 + ... + 6372778.

It is an arithmetic number, because the mean of its divisors is an integer number (30227221170).

Almost surely, 2^201451222615 is an apocalyptic number.

201451222615 is a deficient number, since it is larger than the sum of its proper divisors (40366546745).

201451222615 is a wasteful number, since it uses less digits than its factorization.

201451222615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12717041.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 201451222615 its reverse (516222154102), we get a palindrome (717673376717).

The spelling of 201451222615 in words is "two hundred one billion, four hundred fifty-one million, two hundred twenty-two thousand, six hundred fifteen".