83887772875 has 16 divisors (see below), whose sum is σ = 110850292800. Its totient is φ = 63162556800.

The previous prime is 83887772873. The next prime is 83887772887. The reversal of 83887772875 is 57827778838.

It is a happy number.

It is not a de Polignac number, because 83887772875 - 2¹ = 83887772873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83887772873) 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 15 ways as a sum of consecutive naturals, for example, 19736175 + ... + 19740424.

It is an arithmetic number, because the mean of its divisors is an integer number (6928143300).

Almost surely, 2^83887772875 is an apocalyptic number.

83887772875 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

83887772875 is a deficient number, since it is larger than the sum of its proper divisors (26962519925).

83887772875 is a wasteful number, since it uses less digits than its factorization.

83887772875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39476631 (or 39476621 counting only the distinct ones).

The product of its digits is 295034880, while the sum is 70.

The spelling of 83887772875 in words is "eighty-three billion, eight hundred eighty-seven million, seven hundred seventy-two thousand, eight hundred seventy-five".