7978285054 has 16 divisors (see below), whose sum is σ = 12427462656. Its totient is φ = 3837339000.

The previous prime is 7978285043. The next prime is 7978285061. The reversal of 7978285054 is 4505828797.

It is a junction number, because it is equal to n+sod(n) for n = 7978284986 and 7978285004.

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, 374922 + ... + 395629.

It is an arithmetic number, because the mean of its divisors is an integer number (776716416).

Almost surely, 2^7978285054 is an apocalyptic number.

7978285054 is a deficient number, since it is larger than the sum of its proper divisors (4449177602).

7978285054 is a wasteful number, since it uses less digits than its factorization.

7978285054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770751.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The square root of 7978285054 is about 89321.2463750926. The cubic root of 7978285054 is about 1998.1887814054.

It can be divided in two parts, 79782 and 85054, that added together give a square (164836 = 406²).

The spelling of 7978285054 in words is "seven billion, nine hundred seventy-eight million, two hundred eighty-five thousand, fifty-four".