68538402698 has 8 divisors (see below), whose sum is σ = 102808733700. Its totient is φ = 34268824800.

The previous prime is 68538402697. The next prime is 68538402763. The reversal of 68538402698 is 89620483586.

It can be written as a sum of positive squares in 2 ways, for example, as 68488460209 + 49942489 = 261703^2 + 7067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68538402697) 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, 196598 + ... + 419198.

Almost surely, 2^68538402698 is an apocalyptic number.

68538402698 is a deficient number, since it is larger than the sum of its proper divisors (34270331002).

68538402698 is a wasteful number, since it uses less digits than its factorization.

68538402698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376552.

The product of its (nonzero) digits is 19906560, while the sum is 59.

The spelling of 68538402698 in words is "sixty-eight billion, five hundred thirty-eight million, four hundred two thousand, six hundred ninety-eight".