68491168949 has 8 divisors (see below), whose sum is σ = 78277726080. Its totient is φ = 58705137936.

The previous prime is 68491168931. The next prime is 68491168979. The reversal of 68491168949 is 94986119486.

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

It is a cyclic number.

It is not a de Polignac number, because 68491168949 - 2¹² = 68491164853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68491168909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204767 + ... + 422979.

It is an arithmetic number, because the mean of its divisors is an integer number (9784715760).

Almost surely, 2^68491168949 is an apocalyptic number.

It is an amenable number.

68491168949 is a deficient number, since it is larger than the sum of its proper divisors (9786557131).

68491168949 is a wasteful number, since it uses less digits than its factorization.

68491168949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263059.

The product of its digits is 26873856, while the sum is 65.

The spelling of 68491168949 in words is "sixty-eight billion, four hundred ninety-one million, one hundred sixty-eight thousand, nine hundred forty-nine".