67248207691 has 16 divisors (see below), whose sum is σ = 84914072064. Its totient is φ = 51891928704.

The previous prime is 67248207617. The next prime is 67248207709. The reversal of 67248207691 is 19670284276.

It is not a de Polignac number, because 67248207691 - 2⁹ = 67248207179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67248207601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12282285 + ... + 12287758.

It is an arithmetic number, because the mean of its divisors is an integer number (5307129504).

Almost surely, 2^67248207691 is an apocalyptic number.

67248207691 is a deficient number, since it is larger than the sum of its proper divisors (17665864373).

67248207691 is a wasteful number, since it uses less digits than its factorization.

67248207691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24570090.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 67248207691 in words is "sixty-seven billion, two hundred forty-eight million, two hundred seven thousand, six hundred ninety-one".