201451023415 has 32 divisors (see below), whose sum is σ = 245268959040. Its totient is φ = 158826845184.

The previous prime is 201451023413. The next prime is 201451023421. The reversal of 201451023415 is 514320154102.

It is a cyclic number.

It is not a de Polignac number, because 201451023415 - 2¹ = 201451023413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201451023413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156284091 + ... + 156285379.

It is an arithmetic number, because the mean of its divisors is an integer number (7664654970).

Almost surely, 2^201451023415 is an apocalyptic number.

201451023415 is a deficient number, since it is larger than the sum of its proper divisors (43817935625).

201451023415 is a wasteful number, since it uses less digits than its factorization.

201451023415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 201451023415 its reverse (514320154102), we get a palindrome (715771177517).

The spelling of 201451023415 in words is "two hundred one billion, four hundred fifty-one million, twenty-three thousand, four hundred fifteen".