20170078318 has 32 divisors (see below), whose sum is σ = 33719716800. Its totient is φ = 8984591616.

The previous prime is 20170078307. The next prime is 20170078337. The reversal of 20170078318 is 81387007102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2800530 + ... + 2807722.

It is an arithmetic number, because the mean of its divisors is an integer number (1053741150).

Almost surely, 2^20170078318 is an apocalyptic number.

20170078318 is a deficient number, since it is larger than the sum of its proper divisors (13549638482).

20170078318 is a wasteful number, since it uses less digits than its factorization.

20170078318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10956.

The product of its (nonzero) digits is 18816, while the sum is 37.

The spelling of 20170078318 in words is "twenty billion, one hundred seventy million, seventy-eight thousand, three hundred eighteen".