20845124518 has 8 divisors (see below), whose sum is σ = 31270962240. Its totient is φ = 10421470440.

The previous prime is 20845124507. The next prime is 20845124537. The reversal of 20845124518 is 81542154802.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521833 + ... + 560356.

It is an arithmetic number, because the mean of its divisors is an integer number (3908870280).

Almost surely, 2^20845124518 is an apocalyptic number.

20845124518 is a deficient number, since it is larger than the sum of its proper divisors (10425837722).

20845124518 is a wasteful number, since it uses less digits than its factorization.

20845124518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091822.

The product of its (nonzero) digits is 102400, while the sum is 40.

The spelling of 20845124518 in words is "twenty billion, eight hundred forty-five million, one hundred twenty-four thousand, five hundred eighteen".