87777105321 has 8 divisors (see below), whose sum is σ = 118517610880. Its totient is φ = 57777334992.

The previous prime is 87777105301. The next prime is 87777105343. The reversal of 87777105321 is 12350177778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87777105321 - 2¹⁸ = 87776843177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87777105301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185183530 + ... + 185184003.

It is an arithmetic number, because the mean of its divisors is an integer number (14814701360).

Almost surely, 2^87777105321 is an apocalyptic number.

It is an amenable number.

87777105321 is a deficient number, since it is larger than the sum of its proper divisors (30740505559).

87777105321 is a wasteful number, since it uses less digits than its factorization.

87777105321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370367615.

The product of its (nonzero) digits is 576240, while the sum is 48.

The spelling of 87777105321 in words is "eighty-seven billion, seven hundred seventy-seven million, one hundred five thousand, three hundred twenty-one".