67740651584 has 28 divisors (see below), whose sum is σ = 134918915328. Its totient is φ = 33745334400.

The previous prime is 67740651581. The next prime is 67740651611. The reversal of 67740651584 is 48515604776.

It is not an unprimeable number, because it can be changed into a prime (67740651581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1935512 + ... + 1970199.

Almost surely, 2^67740651584 is an apocalyptic number.

67740651584 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

67740651584 is a deficient number, since it is larger than the sum of its proper divisors (67178263744).

67740651584 is a wasteful number, since it uses less digits than its factorization.

67740651584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905994 (or 3905984 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 67740651584 in words is "sixty-seven billion, seven hundred forty million, six hundred fifty-one thousand, five hundred eighty-four".