20110017173430 has 32 divisors (see below), whose sum is σ = 48264472512864. Its totient is φ = 5362623324416.

The previous prime is 20110017173413. The next prime is 20110017173461. The reversal of 20110017173430 is 3437171001102.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 484234 + ... + 6360386.

It is an arithmetic number, because the mean of its divisors is an integer number (1508264766027).

Almost surely, 2^{20110017173430} is an apocalyptic number.

20110017173430 is an abundant number, since it is smaller than the sum of its proper divisors (28154455339434).

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

20110017173430 is a wasteful number, since it uses less digits than its factorization.

20110017173430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990240.

The product of its (nonzero) digits is 3528, while the sum is 30.

Adding to 20110017173430 its reverse (3437171001102), we get a palindrome (23547188174532).

The spelling of 20110017173430 in words is "twenty trillion, one hundred ten billion, seventeen million, one hundred seventy-three thousand, four hundred thirty".