87755940199 has 4 divisors (see below), whose sum is σ = 87768645120. Its totient is φ = 87743235280.

The previous prime is 87755940197. The next prime is 87755940229. The reversal of 87755940199 is 99104955778.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87755940199 - 2¹ = 87755940197 is a prime.

It is a super-2 number, since 2×87755940199² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87755940199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87755940197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6342094 + ... + 6355915.

It is an arithmetic number, because the mean of its divisors is an integer number (21942161280).

Almost surely, 2^87755940199 is an apocalyptic number.

87755940199 is a deficient number, since it is larger than the sum of its proper divisors (12704921).

87755940199 is a wasteful number, since it uses less digits than its factorization.

87755940199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12704920.

The product of its (nonzero) digits is 28576800, while the sum is 64.

The spelling of 87755940199 in words is "eighty-seven billion, seven hundred fifty-five million, nine hundred forty thousand, one hundred ninety-nine".