8051261800 has 48 divisors (see below), whose sum is σ = 19072400940. Its totient is φ = 3159736320.

The previous prime is 8051261791. The next prime is 8051261807. The reversal of 8051261800 is 81621508.

It can be written as a sum of positive squares in 6 ways, for example, as 2395319364 + 5655942436 = 48942^2 + 75206^2 .

It is not an unprimeable number, because it can be changed into a prime (8051261807) 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 11 ways as a sum of consecutive naturals, for example, 369177 + ... + 390376.

Almost surely, 2^8051261800 is an apocalyptic number.

It is an amenable number.

8051261800 is an abundant number, since it is smaller than the sum of its proper divisors (11021139140).

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

8051261800 is a wasteful number, since it uses less digits than its factorization.

8051261800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759622 (or 759613 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 8051261800 is about 89728.8236855917. The cubic root of 8051261800 is about 2004.2627248005.

The spelling of 8051261800 in words is "eight billion, fifty-one million, two hundred sixty-one thousand, eight hundred".