78176845140 has 24 divisors (see below), whose sum is σ = 218895166560. Its totient is φ = 20847158688.

The previous prime is 78176845121. The next prime is 78176845231. The reversal of 78176845140 is 4154867187.

It is a super-3 number, since 3×78176845140³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651473650 + ... + 651473769.

It is an arithmetic number, because the mean of its divisors is an integer number (9120631940).

Almost surely, 2^78176845140 is an apocalyptic number.

It is an amenable number.

78176845140 is an abundant number, since it is smaller than the sum of its proper divisors (140718321420).

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

78176845140 is a wasteful number, since it uses less digits than its factorization.

78176845140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302947431 (or 1302947429 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 78176845140 in words is "seventy-eight billion, one hundred seventy-six million, eight hundred forty-five thousand, one hundred forty".