168838530630551 has 4 divisors (see below), whose sum is σ = 168839543887152. Its totient is φ = 168837517373952.

The previous prime is 168838530630527. The next prime is 168838530630577. The reversal of 168838530630551 is 155036035838861.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168838530630551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168838530630521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506378315 + ... + 506711628.

It is an arithmetic number, because the mean of its divisors is an integer number (42209885971788).

Almost surely, 2^{168838530630551} is an apocalyptic number.

168838530630551 is a deficient number, since it is larger than the sum of its proper divisors (1013256601).

168838530630551 is a wasteful number, since it uses less digits than its factorization.

168838530630551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013256600.

The product of its (nonzero) digits is 62208000, while the sum is 62.

The spelling of 168838530630551 in words is "one hundred sixty-eight trillion, eight hundred thirty-eight billion, five hundred thirty million, six hundred thirty thousand, five hundred fifty-one".