68157430047268 has 6 divisors (see below), whose sum is σ = 119275502582726. Its totient is φ = 34078715023632.

The previous prime is 68157430047251. The next prime is 68157430047269. The reversal of 68157430047268 is 86274003475186.

It can be written as a sum of positive squares in only one way, i.e., 66708252270144 + 1449177777124 = 8167512^2 + 1203818^2 .

It is not an unprimeable number, because it can be changed into a prime (68157430047269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8519678755905 + ... + 8519678755912.

Almost surely, 2^{68157430047268} is an apocalyptic number.

It is an amenable number.

68157430047268 is a deficient number, since it is larger than the sum of its proper divisors (51118072535458).

68157430047268 is a wasteful number, since it uses less digits than its factorization.

68157430047268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17039357511821 (or 17039357511819 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 61.

The spelling of 68157430047268 in words is "sixty-eight trillion, one hundred fifty-seven billion, four hundred thirty million, forty-seven thousand, two hundred sixty-eight".