20415045522 has 8 divisors (see below), whose sum is σ = 40830091056. Its totient is φ = 6805015172.

The previous prime is 20415045517. The next prime is 20415045529. The reversal of 20415045522 is 22554051402.

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

20415045522 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 20415045522.

It is not an unprimeable number, because it can be changed into a prime (20415045529) 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, 1701253788 + ... + 1701253799.

It is an arithmetic number, because the mean of its divisors is an integer number (5103761382).

Almost surely, 2^20415045522 is an apocalyptic number.

20415045522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20415045522 is a wasteful number, since it uses less digits than its factorization.

20415045522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402507592.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 20415045522 its reverse (22554051402), we get a palindrome (42969096924).

The spelling of 20415045522 in words is "twenty billion, four hundred fifteen million, forty-five thousand, five hundred twenty-two".