20501423522 has 8 divisors (see below), whose sum is σ = 30753224400. Its totient is φ = 10250348724.

The previous prime is 20501423521. The next prime is 20501423557. The reversal of 20501423522 is 22532410502.

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 = 20501423491 and 20501423500.

It is not an unprimeable number, because it can be changed into a prime (20501423521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104372 + ... + 227807.

It is an arithmetic number, because the mean of its divisors is an integer number (3844153050).

Almost surely, 2^20501423522 is an apocalyptic number.

20501423522 is a deficient number, since it is larger than the sum of its proper divisors (10251800878).

20501423522 is a wasteful number, since it uses less digits than its factorization.

20501423522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363040.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20501423522 in words is "twenty billion, five hundred one million, four hundred twenty-three thousand, five hundred twenty-two".