20297578758 has 8 divisors (see below), whose sum is σ = 40595157528. Its totient is φ = 6765859584.

The previous prime is 20297578753. The next prime is 20297578759. The reversal of 20297578758 is 85787579202.

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

20297578758 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20297578753) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1691464891 + ... + 1691464902.

It is an arithmetic number, because the mean of its divisors is an integer number (5074394691).

Almost surely, 2^20297578758 is an apocalyptic number.

20297578758 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20297578758 is a wasteful number, since it uses less digits than its factorization.

20297578758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382929798.

The product of its (nonzero) digits is 19756800, while the sum is 60.

The spelling of 20297578758 in words is "twenty billion, two hundred ninety-seven million, five hundred seventy-eight thousand, seven hundred fifty-eight".