102001553512 has 16 divisors (see below), whose sum is σ = 191256372900. Its totient is φ = 50999854080.

The previous prime is 102001553497. The next prime is 102001553531. The reversal of 102001553512 is 215355100201.

It can be written as a sum of positive squares in 2 ways, for example, as 101242330596 + 759222916 = 318186^2 + 27554^2 .

It is a super-2 number, since 2×102001553512² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665314 + ... + 804142.

Almost surely, 2^102001553512 is an apocalyptic number.

It is an amenable number.

102001553512 is a deficient number, since it is larger than the sum of its proper divisors (89254819388).

102001553512 is a wasteful number, since it uses less digits than its factorization.

102001553512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230676 (or 230672 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 102001553512 its reverse (215355100201), we get a palindrome (317356653713).

The spelling of 102001553512 in words is "one hundred two billion, one million, five hundred fifty-three thousand, five hundred twelve".