20200161700 has 72 divisors (see below), whose sum is σ = 47317596480. Its totient is φ = 7462224000.

The previous prime is 20200161697. The next prime is 20200161703. The reversal of 20200161700 is 716100202.

It is an interprime number because it is at equal distance from previous prime (20200161697) and next prime (20200161703).

It is a super-2 number, since 2×20200161700² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20200161703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84726 + ... + 218125.

It is an arithmetic number, because the mean of its divisors is an integer number (657188840).

Almost surely, 2^20200161700 is an apocalyptic number.

20200161700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200161700 is an abundant number, since it is smaller than the sum of its proper divisors (27117434780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20200161700 is a wasteful number, since it uses less digits than its factorization.

20200161700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302917 (or 302910 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 20200161700 its reverse (716100202), we get a palindrome (20916261902).

The spelling of 20200161700 in words is "twenty billion, two hundred million, one hundred sixty-one thousand, seven hundred".