7978285055 has 8 divisors (see below), whose sum is σ = 10310399232. Its totient is φ = 5891656608.

The previous prime is 7978285043. The next prime is 7978285061. The reversal of 7978285055 is 5505828797.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7978285055 is a prime.

It is a Duffinian number.

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, 61371359 + ... + 61371488.

It is an arithmetic number, because the mean of its divisors is an integer number (1288799904).

Almost surely, 2^7978285055 is an apocalyptic number.

7978285055 is a deficient number, since it is larger than the sum of its proper divisors (2332114177).

7978285055 is a wasteful number, since it uses less digits than its factorization.

7978285055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122742865.

The product of its (nonzero) digits is 7056000, while the sum is 56.

The square root of 7978285055 is about 89321.2463806904. The cubic root of 7978285055 is about 1998.1887814889.

The spelling of 7978285055 in words is "seven billion, nine hundred seventy-eight million, two hundred eighty-five thousand, fifty-five".