20445523342 has 4 divisors (see below), whose sum is σ = 30668285016. Its totient is φ = 10222761670.

The previous prime is 20445523333. The next prime is 20445523361. The reversal of 20445523342 is 24332554402.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20445523298 and 20445523307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111380834 + ... + 5111380837.

It is an arithmetic number, because the mean of its divisors is an integer number (7667071254).

Almost surely, 2^20445523342 is an apocalyptic number.

20445523342 is a deficient number, since it is larger than the sum of its proper divisors (10222761674).

20445523342 is a wasteful number, since it uses less digits than its factorization.

20445523342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10222761673.

The product of its (nonzero) digits is 115200, while the sum is 34.

The spelling of 20445523342 in words is "twenty billion, four hundred forty-five million, five hundred twenty-three thousand, three hundred forty-two".