8051821087 has 16 divisors (see below), whose sum is σ = 8582129280. Its totient is φ = 7541856000.

The previous prime is 8051821069. The next prime is 8051821093. The reversal of 8051821087 is 7801281508.

It is a de Polignac number, because none of the positive numbers 2^k-8051821087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8051831087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97962 + ... + 160312.

It is an arithmetic number, because the mean of its divisors is an integer number (536383080).

Almost surely, 2^8051821087 is an apocalyptic number.

8051821087 is a deficient number, since it is larger than the sum of its proper divisors (530308193).

8051821087 is a wasteful number, since it uses less digits than its factorization.

8051821087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62514.

The product of its (nonzero) digits is 35840, while the sum is 40.

The square root of 8051821087 is about 89731.9401718251. The cubic root of 8051821087 is about 2004.3091329354.

The spelling of 8051821087 in words is "eight billion, fifty-one million, eight hundred twenty-one thousand, eighty-seven".