20168520370 has 16 divisors (see below), whose sum is σ = 37881743040. Its totient is φ = 7716651184.

The previous prime is 20168520313. The next prime is 20168520389. The reversal of 20168520370 is 7302586102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43844380 + ... + 43844839.

It is an arithmetic number, because the mean of its divisors is an integer number (2367608940).

Almost surely, 2^20168520370 is an apocalyptic number.

20168520370 is a deficient number, since it is larger than the sum of its proper divisors (17713222670).

20168520370 is a wasteful number, since it uses less digits than its factorization.

20168520370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87689249.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20168520370 in words is "twenty billion, one hundred sixty-eight million, five hundred twenty thousand, three hundred seventy".