20874046785 has 64 divisors (see below), whose sum is σ = 36381975552. Its totient is φ = 10179362816.

The previous prime is 20874046763. The next prime is 20874046801. The reversal of 20874046785 is 58764047802.

It is not a de Polignac number, because 20874046785 - 2⁷ = 20874046657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1635589 + ... + 1648301.

It is an arithmetic number, because the mean of its divisors is an integer number (568468368).

Almost surely, 2^20874046785 is an apocalyptic number.

It is an amenable number.

20874046785 is a deficient number, since it is larger than the sum of its proper divisors (15507928767).

20874046785 is a wasteful number, since it uses less digits than its factorization.

20874046785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12922.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 20874046785 in words is "twenty billion, eight hundred seventy-four million, forty-six thousand, seven hundred eighty-five".