68938155928224 has 144 divisors (see below), whose sum is σ = 214620670371744. Its totient is φ = 20816532518400.

The previous prime is 68938155928223. The next prime is 68938155928247. The reversal of 68938155928224 is 42282955183986.

It is a happy number.

68938155928224 is a `hidden beast` number, since 6 + 8 + 9 + 3 + 8 + 1 + 5 + 592 + 8 + 2 + 24 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (68938155928223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37550067 + ... + 39343154.

It is an arithmetic number, because the mean of its divisors is an integer number (1490421322026).

Almost surely, 2^{68938155928224} is an apocalyptic number.

It is an amenable number.

68938155928224 is an abundant number, since it is smaller than the sum of its proper divisors (145682514443520).

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

68938155928224 is a wasteful number, since it uses less digits than its factorization.

68938155928224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76893531 (or 76893520 counting only the distinct ones).

The product of its digits is 597196800, while the sum is 72.

The spelling of 68938155928224 in words is "sixty-eight trillion, nine hundred thirty-eight billion, one hundred fifty-five million, nine hundred twenty-eight thousand, two hundred twenty-four".