68135461245 has 24 divisors (see below), whose sum is σ = 118133597400. Its totient is φ = 36329026176.

The previous prime is 68135461223. The next prime is 68135461291. The reversal of 68135461245 is 54216453186.

68135461245 is a `hidden beast` number, since 6 + 81 + 3 + 546 + 1 + 24 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3608284761 + 64527176484 = 60069^2 + 254022^2 .

It is not a de Polignac number, because 68135461245 - 2⁸ = 68135460989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68135461245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37210 + ... + 371019.

It is an arithmetic number, because the mean of its divisors is an integer number (4922233225).

Almost surely, 2^68135461245 is an apocalyptic number.

It is an amenable number.

68135461245 is a deficient number, since it is larger than the sum of its proper divisors (49998136155).

68135461245 is a wasteful number, since it uses less digits than its factorization.

68135461245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411949 (or 411946 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 68135461245 in words is "sixty-eight billion, one hundred thirty-five million, four hundred sixty-one thousand, two hundred forty-five".