67680221345 has 8 divisors (see below), whose sum is σ = 88599562560. Its totient is φ = 49221979120.

The previous prime is 67680221321. The next prime is 67680221353. The reversal of 67680221345 is 54312208676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-67680221345 is a prime.

It is a super-2 number, since 2×67680221345² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67680221296 and 67680221305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615274685 + ... + 615274794.

It is an arithmetic number, because the mean of its divisors is an integer number (11074945320).

Almost surely, 2^67680221345 is an apocalyptic number.

It is an amenable number.

67680221345 is a deficient number, since it is larger than the sum of its proper divisors (20919341215).

67680221345 is a wasteful number, since it uses less digits than its factorization.

67680221345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230549495.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 67680221345 in words is "sixty-seven billion, six hundred eighty million, two hundred twenty-one thousand, three hundred forty-five".