67258833640 has 16 divisors (see below), whose sum is σ = 151332375780. Its totient is φ = 26903533440.

The previous prime is 67258833601. The next prime is 67258833659. The reversal of 67258833640 is 4633885276.

It can be written as a sum of positive squares in 2 ways, for example, as 58359930084 + 8898903556 = 241578^2 + 94334^2 .

It is a super-2 number, since 2×67258833640² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840735381 + ... + 840735460.

Almost surely, 2^67258833640 is an apocalyptic number.

It is an amenable number.

67258833640 is an abundant number, since it is smaller than the sum of its proper divisors (84073542140).

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

67258833640 is a wasteful number, since it uses less digits than its factorization.

67258833640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681470852 (or 1681470848 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 67258833640 in words is "sixty-seven billion, two hundred fifty-eight million, eight hundred thirty-three thousand, six hundred forty".