68378078051892 has 36 divisors (see below), whose sum is σ = 197536669928416. Its totient is φ = 19536593729040.

The previous prime is 68378078051879. The next prime is 68378078051917. The reversal of 68378078051892 is 29815087087386.

68378078051892 is a `hidden beast` number, since 6 + 8 + 37 + 8 + 0 + 78 + 0 + 518 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68378078051892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135670789534 + ... + 135670790037.

Almost surely, 2^{68378078051892} is an apocalyptic number.

It is an amenable number.

68378078051892 is an abundant number, since it is smaller than the sum of its proper divisors (129158591876524).

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

68378078051892 is a wasteful number, since it uses less digits than its factorization.

68378078051892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271341579588 (or 271341579583 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 72.

The spelling of 68378078051892 in words is "sixty-eight trillion, three hundred seventy-eight billion, seventy-eight million, fifty-one thousand, eight hundred ninety-two".