67046421556 has 12 divisors (see below), whose sum is σ = 118492933860. Its totient is φ = 33191297600.

The previous prime is 67046421487. The next prime is 67046421571. The reversal of 67046421556 is 65512464076.

67046421556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 59878090000 + 7168331556 = 244700^2 + 84666^2 .

It is a super-2 number, since 2×67046421556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82977841 + ... + 82978648.

It is an arithmetic number, because the mean of its divisors is an integer number (9874411155).

Almost surely, 2^67046421556 is an apocalyptic number.

It is an amenable number.

67046421556 is a deficient number, since it is larger than the sum of its proper divisors (51446512304).

67046421556 is a wasteful number, since it uses less digits than its factorization.

67046421556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165956594 (or 165956592 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 67046421556 in words is "sixty-seven billion, forty-six million, four hundred twenty-one thousand, five hundred fifty-six".