20535451450012 has 24 divisors (see below), whose sum is σ = 36312695402256. Its totient is φ = 10160936327808.

The previous prime is 20535451449923. The next prime is 20535451450049. The reversal of 20535451450012 is 21005415453502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67436263 + ... + 67740094.

It is an arithmetic number, because the mean of its divisors is an integer number (1513028975094).

Almost surely, 2^{20535451450012} is an apocalyptic number.

It is an amenable number.

20535451450012 is a deficient number, since it is larger than the sum of its proper divisors (15777243952244).

20535451450012 is a wasteful number, since it uses less digits than its factorization.

20535451450012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135176757 (or 135176755 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 20535451450012 in words is "twenty trillion, five hundred thirty-five billion, four hundred fifty-one million, four hundred fifty thousand, twelve".