7520991912 has 192 divisors, whose sum is σ = 24331507200. Its totient is φ = 2131945920.

The previous prime is 7520991893. The next prime is 7520991931. The reversal of 7520991912 is 2191990257.

It is an interprime number because it is at equal distance from previous prime (7520991893) and next prime (7520991931).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1780539 + ... + 1784757.

It is an arithmetic number, because the mean of its divisors is an integer number (126726600).

Almost surely, 2^7520991912 is an apocalyptic number.

7520991912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7520991912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12165753600).

7520991912 is an abundant number, since it is smaller than the sum of its proper divisors (16810515288).

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

7520991912 is a wasteful number, since it uses less digits than its factorization.

7520991912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378 (or 4362 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 7520991912 is about 86723.6525522305. The cubic root of 7520991912 is about 1959.2583540001.

The spelling of 7520991912 in words is "seven billion, five hundred twenty million, nine hundred ninety-one thousand, nine hundred twelve".