67274064640 has 72 divisors (see below), whose sum is σ = 170621428320. Its totient is φ = 25326698496.

The previous prime is 67274064629. The next prime is 67274064643. The reversal of 67274064640 is 4646047276.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (67274064643) 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, 1524060 + ... + 1567579.

It is an arithmetic number, because the mean of its divisors is an integer number (2369742060).

Almost surely, 2^67274064640 is an apocalyptic number.

It is an amenable number.

67274064640 is an abundant number, since it is smaller than the sum of its proper divisors (103347363680).

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

67274064640 is a wasteful number, since it uses less digits than its factorization.

67274064640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091677 (or 3091663 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 46.

The spelling of 67274064640 in words is "sixty-seven billion, two hundred seventy-four million, sixty-four thousand, six hundred forty".