20315525503 has 8 divisors (see below), whose sum is σ = 25003723808. Its totient is φ = 16073822304.

The previous prime is 20315525497. The next prime is 20315525539. The reversal of 20315525503 is 30552551302.

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

It is a cyclic number.

It is not a de Polignac number, because 20315525503 - 2¹⁷ = 20315394431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315525603) 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, 111623676 + ... + 111623857.

It is an arithmetic number, because the mean of its divisors is an integer number (3125465476).

Almost surely, 2^20315525503 is an apocalyptic number.

20315525503 is a deficient number, since it is larger than the sum of its proper divisors (4688198305).

20315525503 is a wasteful number, since it uses less digits than its factorization.

20315525503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223247553.

The product of its (nonzero) digits is 22500, while the sum is 31.

The spelling of 20315525503 in words is "twenty billion, three hundred fifteen million, five hundred twenty-five thousand, five hundred three".