68197795781958 has 96 divisors (see below), whose sum is σ = 150734068261920. Its totient is φ = 22277758648320.

The previous prime is 68197795781953. The next prime is 68197795781987. The reversal of 68197795781958 is 85918759779186.

68197795781958 is a `hidden beast` number, since 6 + 8 + 19 + 7 + 7 + 9 + 578 + 19 + 5 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68197795781953) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4810446166 + ... + 4810460342.

It is an arithmetic number, because the mean of its divisors is an integer number (1570146544395).

Almost surely, 2^{68197795781958} is an apocalyptic number.

68197795781958 is an abundant number, since it is smaller than the sum of its proper divisors (82536272479962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68197795781958 is a wasteful number, since it uses less digits than its factorization.

68197795781958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28022 (or 28019 counting only the distinct ones).

The product of its digits is 19203609600, while the sum is 90.

The spelling of 68197795781958 in words is "sixty-eight trillion, one hundred ninety-seven billion, seven hundred ninety-five million, seven hundred eighty-one thousand, nine hundred fifty-eight".