67844632674 has 128 divisors (see below), whose sum is σ = 174413611008. Its totient is φ = 17100357120.

The previous prime is 67844632657. The next prime is 67844632693. The reversal of 67844632674 is 47623644876.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26910534 + ... + 26913054.

It is an arithmetic number, because the mean of its divisors is an integer number (1362606336).

Almost surely, 2^67844632674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67844632674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87206805504).

67844632674 is an abundant number, since it is smaller than the sum of its proper divisors (106568978334).

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

67844632674 is a wasteful number, since it uses less digits than its factorization.

67844632674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712.

The product of its digits is 32514048, while the sum is 57.

The spelling of 67844632674 in words is "sixty-seven billion, eight hundred forty-four million, six hundred thirty-two thousand, six hundred seventy-four".