10020171775918 has 4 divisors (see below), whose sum is σ = 15030257663880. Its totient is φ = 5010085887958.

The previous prime is 10020171775897. The next prime is 10020171775951. The reversal of 10020171775918 is 81957717102001.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2505042943978 + ... + 2505042943981.

It is an arithmetic number, because the mean of its divisors is an integer number (3757564415970).

Almost surely, 2^{10020171775918} is an apocalyptic number.

10020171775918 is a deficient number, since it is larger than the sum of its proper divisors (5010085887962).

10020171775918 is an equidigital number, since it uses as much as digits as its factorization.

10020171775918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010085887961.

The product of its (nonzero) digits is 246960, while the sum is 49.

Adding to 10020171775918 its reverse (81957717102001), we get a palindrome (91977888877919).

The spelling of 10020171775918 in words is "ten trillion, twenty billion, one hundred seventy-one million, seven hundred seventy-five thousand, nine hundred eighteen".