7816347816 has 32 divisors (see below), whose sum is σ = 19730592960. Its totient is φ = 2580152832.

The previous prime is 7816347797. The next prime is 7816347823. The reversal of 7816347816 is 6187436187.

It is a super-2 number, since 2×7816347816² (a number of 21 digits) contains 22 as substring.

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

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, 1578505 + ... + 1583448.

It is an arithmetic number, because the mean of its divisors is an integer number (616581030).

Almost surely, 2^7816347816 is an apocalyptic number.

It is an amenable number.

7816347816 is an abundant number, since it is smaller than the sum of its proper divisors (11914245144).

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

7816347816 is a wasteful number, since it uses less digits than its factorization.

7816347816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162065 (or 3162061 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 7816347816 is about 88410.1115031533. Note that the first 3 decimals coincide. The cubic root of 7816347816 is about 1984.5770229423.

The spelling of 7816347816 in words is "seven billion, eight hundred sixteen million, three hundred forty-seven thousand, eight hundred sixteen".