68046213537 has 8 divisors (see below), whose sum is σ = 100809205280. Its totient is φ = 45364142340.

The previous prime is 68046213493. The next prime is 68046213551. The reversal of 68046213537 is 73531264086.

68046213537 is a `hidden beast` number, since 68 + 0 + 46 + 2 + 13 + 537 = 666.

It is not a de Polignac number, because 68046213537 - 2¹⁹ = 68045689249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68046213492 and 68046213501.

It is not an unprimeable number, because it can be changed into a prime (68046213577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260115039 + ... + 1260115092.

It is an arithmetic number, because the mean of its divisors is an integer number (12601150660).

Almost surely, 2^68046213537 is an apocalyptic number.

It is an amenable number.

68046213537 is a deficient number, since it is larger than the sum of its proper divisors (32762991743).

68046213537 is a wasteful number, since it uses less digits than its factorization.

68046213537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520230140 (or 2520230134 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 68046213537 in words is "sixty-eight billion, forty-six million, two hundred thirteen thousand, five hundred thirty-seven".