68055533945 has 16 divisors (see below), whose sum is σ = 94514741760. Its totient is φ = 46075932864.

The previous prime is 68055533941. The next prime is 68055533947. The reversal of 68055533945 is 54933555086.

It is a cyclic number.

It is not a de Polignac number, because 68055533945 - 2² = 68055533941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68055533941) 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, 12303842 + ... + 12309371.

It is an arithmetic number, because the mean of its divisors is an integer number (5907171360).

Almost surely, 2^68055533945 is an apocalyptic number.

It is an amenable number.

68055533945 is a deficient number, since it is larger than the sum of its proper divisors (26459207815).

68055533945 is a wasteful number, since it uses less digits than its factorization.

68055533945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24613304.

The product of its (nonzero) digits is 9720000, while the sum is 53.

The spelling of 68055533945 in words is "sixty-eight billion, fifty-five million, five hundred thirty-three thousand, nine hundred forty-five".