83787211885 has 16 divisors (see below), whose sum is σ = 109290819456. Its totient is φ = 61295370048.

The previous prime is 83787211877. The next prime is 83787211889. The reversal of 83787211885 is 58811278738.

It is a cyclic number.

It is not a de Polignac number, because 83787211885 - 2³ = 83787211877 is a prime.

It is a super-3 number, since 3×83787211885³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83787211889) 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, 6016569 + ... + 6030478.

It is an arithmetic number, because the mean of its divisors is an integer number (6830676216).

Almost surely, 2^83787211885 is an apocalyptic number.

It is an amenable number.

83787211885 is a deficient number, since it is larger than the sum of its proper divisors (25503607571).

83787211885 is a wasteful number, since it uses less digits than its factorization.

83787211885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12047172.

The product of its digits is 6021120, while the sum is 58.

The spelling of 83787211885 in words is "eighty-three billion, seven hundred eighty-seven million, two hundred eleven thousand, eight hundred eighty-five".