67781079846 has 24 divisors (see below), whose sum is σ = 146877477240. Its totient is φ = 22590851616.

The previous prime is 67781079841. The next prime is 67781079859. The reversal of 67781079846 is 64897018776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67781079841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87160 + ... + 378363.

It is an arithmetic number, because the mean of its divisors is an integer number (6119894885).

Almost surely, 2^67781079846 is an apocalyptic number.

67781079846 is an abundant number, since it is smaller than the sum of its proper divisors (79096397394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67781079846 is a wasteful number, since it uses less digits than its factorization.

67781079846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473620 (or 473617 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 67781079846 in words is "sixty-seven billion, seven hundred eighty-one million, seventy-nine thousand, eight hundred forty-six".