7816785054 has 48 divisors (see below), whose sum is σ = 17341645104. Its totient is φ = 2346489600.

The previous prime is 7816785047. The next prime is 7816785089. The reversal of 7816785054 is 4505876187.

It is a happy number.

It is a super-2 number, since 2×7816785054² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7816784988 and 7816785006.

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 23 ways as a sum of consecutive naturals, for example, 52437 + ... + 135584.

It is an arithmetic number, because the mean of its divisors is an integer number (361284273).

Almost surely, 2^7816785054 is an apocalyptic number.

7816785054 is an abundant number, since it is smaller than the sum of its proper divisors (9524860050).

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

7816785054 is a wasteful number, since it uses less digits than its factorization.

7816785054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188093 (or 188080 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The square root of 7816785054 is about 88412.5842513383. The cubic root of 7816785054 is about 1984.6140272795.

The spelling of 7816785054 in words is "seven billion, eight hundred sixteen million, seven hundred eighty-five thousand, fifty-four".