67827654109 has 4 divisors (see below), whose sum is σ = 67828176220. Its totient is φ = 67827132000.

The previous prime is 67827654101. The next prime is 67827654113. The reversal of 67827654109 is 90145672876.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9722551609 + 58105102500 = 98603^2 + 241050^2 .

It is a cyclic number.

It is not a de Polignac number, because 67827654109 - 2³ = 67827654101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67827654109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67827654101) 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, 103609 + ... + 382609.

It is an arithmetic number, because the mean of its divisors is an integer number (16957044055).

Almost surely, 2^67827654109 is an apocalyptic number.

It is an amenable number.

67827654109 is a deficient number, since it is larger than the sum of its proper divisors (522111).

67827654109 is a wasteful number, since it uses less digits than its factorization.

67827654109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522110.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 67827654109 in words is "sixty-seven billion, eight hundred twenty-seven million, six hundred fifty-four thousand, one hundred nine".