168253472827 has 4 divisors (see below), whose sum is σ = 183549243096. Its totient is φ = 152957702560.

The previous prime is 168253472773. The next prime is 168253472857. The reversal of 168253472827 is 728274352861.

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-168253472827 is a prime.

It is a super-2 number, since 2×168253472827² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168253472857) 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, 7647885118 + ... + 7647885139.

It is an arithmetic number, because the mean of its divisors is an integer number (45887310774).

Almost surely, 2^168253472827 is an apocalyptic number.

168253472827 is a deficient number, since it is larger than the sum of its proper divisors (15295770269).

168253472827 is a wasteful number, since it uses less digits than its factorization.

168253472827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15295770268.

The product of its digits is 9031680, while the sum is 55.

The spelling of 168253472827 in words is "one hundred sixty-eight billion, two hundred fifty-three million, four hundred seventy-two thousand, eight hundred twenty-seven".