68227529615 has 64 divisors (see below), whose sum is σ = 102734438400. Its totient is φ = 42412640256.

The previous prime is 68227529603. The next prime is 68227529621. The reversal of 68227529615 is 51692572286.

It is a happy number.

It is a Cunningham number, because it is equal to 261204²-1.

It is not a de Polignac number, because 68227529615 - 2⁴ = 68227529599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7570442 + ... + 7579448.

It is an arithmetic number, because the mean of its divisors is an integer number (1605225600).

Almost surely, 2^68227529615 is an apocalyptic number.

68227529615 is a deficient number, since it is larger than the sum of its proper divisors (34506908785).

68227529615 is a wasteful number, since it uses less digits than its factorization.

68227529615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9504.

The product of its digits is 3628800, while the sum is 53.

The spelling of 68227529615 in words is "sixty-eight billion, two hundred twenty-seven million, five hundred twenty-nine thousand, six hundred fifteen".