20390503517372 has 12 divisors (see below), whose sum is σ = 35688264658200. Its totient is φ = 10193856472176.

The previous prime is 20390503517357. The next prime is 20390503517413. The reversal of 20390503517372 is 27371530509302.

It is a congruent number.

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, 348788747 + ... + 348847202.

It is an arithmetic number, because the mean of its divisors is an integer number (2974022054850).

Almost surely, 2^{20390503517372} is an apocalyptic number.

It is an amenable number.

20390503517372 is a deficient number, since it is larger than the sum of its proper divisors (15297761140828).

20390503517372 is a wasteful number, since it uses less digits than its factorization.

20390503517372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697643260 (or 697643258 counting only the distinct ones).

The product of its (nonzero) digits is 1190700, while the sum is 47.

The spelling of 20390503517372 in words is "twenty trillion, three hundred ninety billion, five hundred three million, five hundred seventeen thousand, three hundred seventy-two".