20078316057 has 8 divisors (see below), whose sum is σ = 26771865120. Its totient is φ = 13385155520.

The previous prime is 20078316031. The next prime is 20078316061. The reversal of 20078316057 is 75061387002.

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

It is a cyclic number.

It is not a de Polignac number, because 20078316057 - 2⁸ = 20078315801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20078316077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59569 + ... + 209057.

It is an arithmetic number, because the mean of its divisors is an integer number (3346483140).

Almost surely, 2^20078316057 is an apocalyptic number.

It is an amenable number.

20078316057 is a deficient number, since it is larger than the sum of its proper divisors (6693549063).

20078316057 is a wasteful number, since it uses less digits than its factorization.

20078316057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194263.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 20078316057 in words is "twenty billion, seventy-eight million, three hundred sixteen thousand, fifty-seven".