20308106078 has 8 divisors (see below), whose sum is σ = 32805402168. Its totient is φ = 9372972024.

The previous prime is 20308106029. The next prime is 20308106083. The reversal of 20308106078 is 87060180302.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390540476 + ... + 390540527.

It is an arithmetic number, because the mean of its divisors is an integer number (4100675271).

Almost surely, 2^20308106078 is an apocalyptic number.

20308106078 is a deficient number, since it is larger than the sum of its proper divisors (12497296090).

20308106078 is a wasteful number, since it uses less digits than its factorization.

20308106078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781081018.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 20308106078 in words is "twenty billion, three hundred eight million, one hundred six thousand, seventy-eight".