67707007440 has 80 divisors (see below), whose sum is σ = 215564500608. Its totient is φ = 17567221248.

The previous prime is 67707007411. The next prime is 67707007463. The reversal of 67707007440 is 4470070776.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 67707007392 and 67707007401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3803452 + ... + 3821211.

Almost surely, 2^67707007440 is an apocalyptic number.

67707007440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67707007440 is an abundant number, since it is smaller than the sum of its proper divisors (147857493168).

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

67707007440 is a wasteful number, since it uses less digits than its factorization.

67707007440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624716 (or 7624710 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 42.

The spelling of 67707007440 in words is "sixty-seven billion, seven hundred seven million, seven thousand, four hundred forty".