20523373053 has 4 divisors (see below), whose sum is σ = 27364497408. Its totient is φ = 13682248700.

The previous prime is 20523373043. The next prime is 20523373061. The reversal of 20523373053 is 35037332502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20523373053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523373043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3420562173 + ... + 3420562178.

It is an arithmetic number, because the mean of its divisors is an integer number (6841124352).

Almost surely, 2^20523373053 is an apocalyptic number.

It is an amenable number.

20523373053 is a deficient number, since it is larger than the sum of its proper divisors (6841124355).

20523373053 is an equidigital number, since it uses as much as digits as its factorization.

20523373053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841124354.

The product of its (nonzero) digits is 56700, while the sum is 33.

The spelling of 20523373053 in words is "twenty billion, five hundred twenty-three million, three hundred seventy-three thousand, fifty-three".