20523010416 has 40 divisors (see below), whose sum is σ = 54250753920. Its totient is φ = 6681909696.

The previous prime is 20523010367. The next prime is 20523010421. The reversal of 20523010416 is 61401032502.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4969596 + ... + 4973723.

It is an arithmetic number, because the mean of its divisors is an integer number (1356268848).

Almost surely, 2^20523010416 is an apocalyptic number.

It is an amenable number.

20523010416 is an abundant number, since it is smaller than the sum of its proper divisors (33727743504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20523010416 is a wasteful number, since it uses less digits than its factorization.

20523010416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9943373 (or 9943367 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20523010416 its reverse (61401032502), we get a palindrome (81924042918).

The spelling of 20523010416 in words is "twenty billion, five hundred twenty-three million, ten thousand, four hundred sixteen".