68751456945 has 16 divisors (see below), whose sum is σ = 112975368000. Its totient is φ = 35676431424.

The previous prime is 68751456941. The next prime is 68751456947. The reversal of 68751456945 is 54965415786.

It is not a de Polignac number, because 68751456945 - 2² = 68751456941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68751456941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61937695 + ... + 61938804.

It is an arithmetic number, because the mean of its divisors is an integer number (7060960500).

Almost surely, 2^68751456945 is an apocalyptic number.

It is an amenable number.

68751456945 is a deficient number, since it is larger than the sum of its proper divisors (44223911055).

68751456945 is a wasteful number, since it uses less digits than its factorization.

68751456945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123876544.

The product of its digits is 36288000, while the sum is 60.

The spelling of 68751456945 in words is "sixty-eight billion, seven hundred fifty-one million, four hundred fifty-six thousand, nine hundred forty-five".