68561412075 has 72 divisors (see below), whose sum is σ = 134415685040. Its totient is φ = 33199891200.

The previous prime is 68561411999. The next prime is 68561412077. The reversal of 68561412075 is 57021416586.

68561412075 is a `hidden beast` number, since 6 + 8 + 5 + 614 + 1 + 20 + 7 + 5 = 666.

It is not a de Polignac number, because 68561412075 - 2⁹ = 68561411563 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 68561412075.

It is not an unprimeable number, because it can be changed into a prime (68561412077) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13705 + ... + 370554.

Almost surely, 2^68561412075 is an apocalyptic number.

68561412075 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68561412075 is a deficient number, since it is larger than the sum of its proper divisors (65854272965).

68561412075 is a wasteful number, since it uses less digits than its factorization.

68561412075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384349 (or 384341 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 68561412075 in words is "sixty-eight billion, five hundred sixty-one million, four hundred twelve thousand, seventy-five".