78255750080 has 28 divisors (see below), whose sum is σ = 186346505640. Its totient is φ = 31302299904.

The previous prime is 78255750047. The next prime is 78255750109. The reversal of 78255750080 is 8005755287.

It is a super-2 number, since 2×78255750080² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122274290 + ... + 122274929.

Almost surely, 2^78255750080 is an apocalyptic number.

It is an amenable number.

78255750080 is an abundant number, since it is smaller than the sum of its proper divisors (108090755560).

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

78255750080 is a wasteful number, since it uses less digits than its factorization.

78255750080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244549236 (or 244549226 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 47.

The spelling of 78255750080 in words is "seventy-eight billion, two hundred fifty-five million, seven hundred fifty thousand, eighty".