68739495442047 has 12 divisors (see below), whose sum is σ = 100973270141640. Its totient is φ = 45049612831728.

The previous prime is 68739495441949. The next prime is 68739495442091. The reversal of 68739495442047 is 74024459493786.

68739495442047 is a `hidden beast` number, since 6 + 8 + 7 + 3 + 94 + 95 + 442 + 0 + 4 + 7 = 666.

It is not a de Polignac number, because 68739495442047 - 2¹⁴ = 68739495425663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68739495442547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64726454688 + ... + 64726455749.

It is an arithmetic number, because the mean of its divisors is an integer number (8414439178470).

Almost surely, 2^{68739495442047} is an apocalyptic number.

68739495442047 is a deficient number, since it is larger than the sum of its proper divisors (32233774699593).

68739495442047 is a wasteful number, since it uses less digits than its factorization.

68739495442047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129452910502 (or 129452910499 counting only the distinct ones).

The product of its (nonzero) digits is 1463132160, while the sum is 72.

The spelling of 68739495442047 in words is "sixty-eight trillion, seven hundred thirty-nine billion, four hundred ninety-five million, four hundred forty-two thousand, forty-seven".