67235948640 has 240 divisors, whose sum is σ = 271185358752. Its totient is φ = 15368196096.

The previous prime is 67235948627. The next prime is 67235948707. The reversal of 67235948640 is 4684953276.

67235948640 is a `hidden beast` number, since 6 + 7 + 2 + 3 + 594 + 8 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 279849 + ... + 461288.

Almost surely, 2^67235948640 is an apocalyptic number.

67235948640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67235948640 is an abundant number, since it is smaller than the sum of its proper divisors (203949410112).

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

67235948640 is a wasteful number, since it uses less digits than its factorization.

67235948640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741171 (or 741154 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 67235948640 in words is "sixty-seven billion, two hundred thirty-five million, nine hundred forty-eight thousand, six hundred forty".