7731091116 has 192 divisors, whose sum is σ = 23874600960. Its totient is φ = 2116964160.

The previous prime is 7731091103. The next prime is 7731091117. The reversal of 7731091116 is 6111901377.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7731091117) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2506111 + ... + 2509193.

It is an arithmetic number, because the mean of its divisors is an integer number (124346880).

Almost surely, 2^7731091116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7731091116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11937300480).

7731091116 is an abundant number, since it is smaller than the sum of its proper divisors (16143509844).

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

7731091116 is a wasteful number, since it uses less digits than its factorization.

7731091116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241 (or 3233 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 7731091116 is about 87926.6234766240. The cubic root of 7731091116 is about 1977.3350465244.

The spelling of 7731091116 in words is "seven billion, seven hundred thirty-one million, ninety-one thousand, one hundred sixteen".