20573509053507 has 8 divisors (see below), whose sum is σ = 28014991051776. Its totient is φ = 13423849878792.

The previous prime is 20573509053347. The next prime is 20573509053551. The reversal of 20573509053507 is 70535090537502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20573509053507 - 2¹² = 20573509049411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20573509053507.

It is not an unprimeable number, because it can be changed into a prime (20573509053707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72955705723 + ... + 72955706004.

It is an arithmetic number, because the mean of its divisors is an integer number (3501873881472).

Almost surely, 2^{20573509053507} is an apocalyptic number.

20573509053507 is a deficient number, since it is larger than the sum of its proper divisors (7441481998269).

20573509053507 is a wasteful number, since it uses less digits than its factorization.

20573509053507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145911411777.

The product of its (nonzero) digits is 4961250, while the sum is 51.

The spelling of 20573509053507 in words is "twenty trillion, five hundred seventy-three billion, five hundred nine million, fifty-three thousand, five hundred seven".