67447961693 has 16 divisors (see below), whose sum is σ = 78576168960. Its totient is φ = 56702646000.

The previous prime is 67447961657. The next prime is 67447961741. The reversal of 67447961693 is 39616974476.

It is not a de Polignac number, because 67447961693 - 2¹⁰ = 67447960669 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 (67447961653) 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, 320363 + ... + 487368.

It is an arithmetic number, because the mean of its divisors is an integer number (4911010560).

Almost surely, 2^67447961693 is an apocalyptic number.

It is an amenable number.

67447961693 is a deficient number, since it is larger than the sum of its proper divisors (11128207267).

67447961693 is a wasteful number, since it uses less digits than its factorization.

67447961693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807968.

The product of its digits is 41150592, while the sum is 62.

The spelling of 67447961693 in words is "sixty-seven billion, four hundred forty-seven million, nine hundred sixty-one thousand, six hundred ninety-three".