87561785701 has 8 divisors (see below), whose sum is σ = 94604469344. Its totient is φ = 80562982320.

The previous prime is 87561785681. The next prime is 87561785747. The reversal of 87561785701 is 10758716578.

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

It is a cyclic number.

It is not a de Polignac number, because 87561785701 - 2¹³ = 87561777509 is a prime.

It is a super-2 number, since 2×87561785701² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87561705701) 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, 10965915 + ... + 10973896.

It is an arithmetic number, because the mean of its divisors is an integer number (11825558668).

Almost surely, 2^87561785701 is an apocalyptic number.

It is an amenable number.

87561785701 is a deficient number, since it is larger than the sum of its proper divisors (7042683643).

87561785701 is a wasteful number, since it uses less digits than its factorization.

87561785701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21940131.

The product of its (nonzero) digits is 3292800, while the sum is 55.

The spelling of 87561785701 in words is "eighty-seven billion, five hundred sixty-one million, seven hundred eighty-five thousand, seven hundred one".