7821923116 has 36 divisors (see below), whose sum is σ = 16761271800. Its totient is φ = 3175816896.

The previous prime is 7821923113. The next prime is 7821923143. The reversal of 7821923116 is 6113291287.

It is a super-2 number, since 2×7821923116² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7821923113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1046481 + ... + 1053928.

Almost surely, 2^7821923116 is an apocalyptic number.

7821923116 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

7821923116 is an abundant number, since it is smaller than the sum of its proper divisors (8939348684).

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

7821923116 is a wasteful number, since it uses less digits than its factorization.

7821923116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100446 (or 2100437 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 7821923116 is about 88441.6367781601. The cubic root of 7821923116 is about 1985.0487685210.

The spelling of 7821923116 in words is "seven billion, eight hundred twenty-one million, nine hundred twenty-three thousand, one hundred sixteen".