20523145030 has 8 divisors (see below), whose sum is σ = 36941661072. Its totient is φ = 8209258008.

The previous prime is 20523145021. The next prime is 20523145031. The reversal of 20523145030 is 3054132502.

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

It is a junction number, because it is equal to n+sod(n) for n = 20523144986 and 20523145004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523145031) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1026157242 + ... + 1026157261.

It is an arithmetic number, because the mean of its divisors is an integer number (4617707634).

Almost surely, 2^20523145030 is an apocalyptic number.

20523145030 is a deficient number, since it is larger than the sum of its proper divisors (16418516042).

20523145030 is a wasteful number, since it uses less digits than its factorization.

20523145030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052314510.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 20523145030 its reverse (3054132502), we get a palindrome (23577277532).

The spelling of 20523145030 in words is "twenty billion, five hundred twenty-three million, one hundred forty-five thousand, thirty".