8261699120 has 40 divisors (see below), whose sum is σ = 19424292480. Its totient is φ = 3267545600.

The previous prime is 8261699119. The next prime is 8261699129. The reversal of 8261699120 is 219961628.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (8261699129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573056 + ... + 587295.

It is an arithmetic number, because the mean of its divisors is an integer number (485607312).

Almost surely, 2^8261699120 is an apocalyptic number.

8261699120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8261699120 is an abundant number, since it is smaller than the sum of its proper divisors (11162593360).

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

8261699120 is a wasteful number, since it uses less digits than its factorization.

8261699120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160453 (or 1160447 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 8261699120 is about 90893.8893435637. The cubic root of 8261699120 is about 2021.5746895267.

The spelling of 8261699120 in words is "eight billion, two hundred sixty-one million, six hundred ninety-nine thousand, one hundred twenty".