201523354012 has 24 divisors (see below), whose sum is σ = 358667971200. Its totient is φ = 99047026416.

The previous prime is 201523354009. The next prime is 201523354093. The reversal of 201523354012 is 210453325102.

It is a super-2 number, since 2×201523354012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6120289 + ... + 6153127.

It is an arithmetic number, because the mean of its divisors is an integer number (14944498800).

Almost surely, 2^201523354012 is an apocalyptic number.

It is an amenable number.

201523354012 is a deficient number, since it is larger than the sum of its proper divisors (157144617188).

201523354012 is a wasteful number, since it uses less digits than its factorization.

201523354012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58905 (or 58903 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 201523354012 its reverse (210453325102), we get a palindrome (411976679114).

The spelling of 201523354012 in words is "two hundred one billion, five hundred twenty-three million, three hundred fifty-four thousand, twelve".