20874344407 has 4 divisors (see below), whose sum is σ = 23856393616. Its totient is φ = 17892295200.

The previous prime is 20874344369. The next prime is 20874344411. The reversal of 20874344407 is 70444347802.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20874344407 - 2¹⁹ = 20873820119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20874344467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491024594 + ... + 1491024607.

It is an arithmetic number, because the mean of its divisors is an integer number (5964098404).

Almost surely, 2^20874344407 is an apocalyptic number.

20874344407 is a deficient number, since it is larger than the sum of its proper divisors (2982049209).

20874344407 is an equidigital number, since it uses as much as digits as its factorization.

20874344407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982049208.

The product of its (nonzero) digits is 602112, while the sum is 43.

The spelling of 20874344407 in words is "twenty billion, eight hundred seventy-four million, three hundred forty-four thousand, four hundred seven".