20003513213512 has 64 divisors (see below), whose sum is σ = 37796194460160. Its totient is φ = 9924821913600.

The previous prime is 20003513213473. The next prime is 20003513213527. The reversal of 20003513213512 is 21531231530002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045051462 + ... + 1045070602.

It is an arithmetic number, because the mean of its divisors is an integer number (590565538440).

Almost surely, 2^{20003513213512} is an apocalyptic number.

It is an amenable number.

20003513213512 is a deficient number, since it is larger than the sum of its proper divisors (17792681246648).

20003513213512 is a wasteful number, since it uses less digits than its factorization.

20003513213512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21014 (or 21010 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 20003513213512 its reverse (21531231530002), we get a palindrome (41534744743514).

The spelling of 20003513213512 in words is "twenty trillion, three billion, five hundred thirteen million, two hundred thirteen thousand, five hundred twelve".