20175580078 has 4 divisors (see below), whose sum is σ = 30263370120. Its totient is φ = 10087790038.

The previous prime is 20175580069. The next prime is 20175580129. The reversal of 20175580078 is 87008557102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87008557102 = 2 ⋅43504278551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5043895018 + ... + 5043895021.

It is an arithmetic number, because the mean of its divisors is an integer number (7565842530).

Almost surely, 2^20175580078 is an apocalyptic number.

20175580078 is a deficient number, since it is larger than the sum of its proper divisors (10087790042).

20175580078 is a wasteful number, since it uses less digits than its factorization.

20175580078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087790041.

The product of its (nonzero) digits is 156800, while the sum is 43.

The spelling of 20175580078 in words is "twenty billion, one hundred seventy-five million, five hundred eighty thousand, seventy-eight".