20297424578 has 16 divisors (see below), whose sum is σ = 30562579584. Its totient is φ = 10109959440.

The previous prime is 20297424541. The next prime is 20297424613. The reversal of 20297424578 is 87542479202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676001 + ... + 705387.

It is an arithmetic number, because the mean of its divisors is an integer number (1910161224).

Almost surely, 2^20297424578 is an apocalyptic number.

20297424578 is a deficient number, since it is larger than the sum of its proper divisors (10265155006).

20297424578 is a wasteful number, since it uses less digits than its factorization.

20297424578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30697.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 20297424578 in words is "twenty billion, two hundred ninety-seven million, four hundred twenty-four thousand, five hundred seventy-eight".