20513362019990 has 64 divisors (see below), whose sum is σ = 42267008711808. Its totient is φ = 7021806105600.

The previous prime is 20513362019933. The next prime is 20513362020059. The reversal of 20513362019990 is 9991026331502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692045570 + ... + 692075210.

It is an arithmetic number, because the mean of its divisors is an integer number (660422011122).

Almost surely, 2^{20513362019990} is an apocalyptic number.

20513362019990 is an abundant number, since it is smaller than the sum of its proper divisors (21753646691818).

20513362019990 is a wasteful number, since it uses less digits than its factorization.

20513362019990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45273.

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 20513362019990 in words is "twenty trillion, five hundred thirteen billion, three hundred sixty-two million, nineteen thousand, nine hundred ninety".